Automotive repair systems including handheld extruder

ABSTRACT

A repair system that includes a handheld device comprising a first extruder tip having an interior passageway extending between an inlet and a tip outlet, wherein the inlet is configured to receive a solid thermoplastic material and the tip outlet is configured to dispense a fluidic thermoplastic material; a nozzle surrounding the first extruder tip to form an annulus between an interior surface of the nozzle and an exterior surface of the first extruder tip; and a heater that is configured to heat the interior passageway of the first extruder tip such that the solid thermoplastic material becomes the fluidic thermoplastic material. In some embodiments, the repair system also includes a gas source in fluid communication with the annulus such that a skirt-shaped curtain of gas extends from the annulus and in a direction towards the tip outlet of the extruder tip.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of the filing date of, and priorityto, U.S. Application No. 62/353,441, filed Jun. 22, 2016 bearingAttorney Docket No. 35722.5PV01, the entire disclosure of which ishereby incorporated herein by reference.

This application is related to U.S. patent application Ser. No.__/___,___, filed Jun. 22, 2017 bearing Attorney Docket No. 35722.5US01,the entire disclosure of which is hereby incorporated herein byreference.

This application is related to U.S. patent application Ser. No.__/___,___, filed Jun. 22, 2017 bearing Attorney Docket No.35722.16US01, the entire disclosure of which is hereby incorporatedherein by reference.

This application is related to U.S. patent application Ser. No.__/___,___, filed Jun. 22, 2017 bearing Attorney Docket No.35722.17US01, the entire disclosure of which is hereby incorporatedherein by reference.

This application is related to U.S. patent application Ser. No.__/___,___, filed Jun. 22, 2017 bearing Attorney Docket No.35722.18US01, the entire disclosure of which is hereby incorporatedherein by reference.

TECHNICAL FIELD

The present disclosure relates in general to automotive repair systems,including an automotive repair system that couples a three-dimensional(3D) printed attachment part to a damaged automotive part to repair thedamaged automotive part.

BACKGROUND

In many cases, if only a portion of an automotive part is damaged,repair of that portion requires replacement of the entire automotivepart. As a result, automotive repair processes with respect to theautomotive part are not flexible, requiring the same replacementprocedure to be followed regardless of the degree to which theautomotive part is damaged. Moreover, such a replacement procedure isexpensive because the entire automotive part must be purchased. Thereplacement procedure may also be very time consuming, increasing “shoptime,” especially when the entire automotive part must be ordered orotherwise obtained from an external source. Therefore, what is needed isa system, method, or apparatus that address one or more of the foregoingissues, and/or other issue(s).

BRIEF DESCRIPTION OF THE DRAWINGS

Various embodiments of the present disclosure will be understood morefully from the detailed description given below and from theaccompanying drawings of various embodiments of the disclosure. In thedrawings, like reference numbers may indicate identical or functionallysimilar elements.

FIG. 1 is a diagrammatic illustration of a system according to anembodiment of the present disclosure;

FIG. 2 is a diagrammatic illustration of an exemplary embodiment of thesystem of FIG. 1 and an automotive part, according to an exemplaryembodiment of the present disclosure;

FIGS. 3A and 3B together form a flow chart illustration of a method ofoperating the system of FIG. 2, according to an exemplary embodiment ofthe present disclosure;

FIG. 4 is a diagrammatic illustration of the system of FIG. 2 during theexecution of a step of the method of FIGS. 3A and 3B, according to anexemplary embodiment of the present disclosure;

FIG. 5 is a flow chart illustration of a step of the method of FIGS. 3Aand 3B, according to an exemplary embodiment of the present disclosure;

FIG. 6 is a diagrammatic illustration of the automotive part of FIG. 2during the execution of a step of the method of FIGS. 3A and 3B,according to an exemplary embodiment of the present disclosure;

FIG. 7 is another diagrammatic illustration of the automotive part ofFIG. 2 during the execution of a step of the method of FIGS. 3A and 3B,according to an exemplary embodiment of the present disclosure;

FIG. 8 is a diagrammatic illustration of a connector tab, according toexemplary embodiment of the present disclosure;

FIG. 9 is a diagrammatic illustration of a customized connector tabattached to the automotive part of FIG. 6 during the execution of a stepof the method of FIGS. 3A and 3B, according to exemplary embodiment ofthe present disclosure;

FIG. 10 is a sectional view of the customized connector tab and theautomotive part of FIG. 9, according to exemplary embodiment of thepresent disclosure;

FIG. 11 is a diagrammatic illustration of a portion of a damagedautomotive part, according to an exemplary embodiment of the presentdisclosure;

FIG. 12 is a diagrammatic illustration of an attachment part, accordingto an exemplary embodiment of the present disclosure;

FIG. 13 is another diagrammatic illustration of the attachment part ofFIG. 12, according to an exemplary embodiment of the present disclosure;

FIG. 14 is a flow chart illustration of a step of the method of FIGS. 3Aand 3B, according to an exemplary embodiment of the present disclosure;

FIG. 15 is a diagrammatic illustration of the attachment part of FIG. 12and a damaged automotive part, according to an exemplary embodiment ofthe present disclosure;

FIG. 16 is a diagrammatic illustration of the attachment part of FIG. 12and the damaged automotive part of FIG. 15 during the execution of astep of the method of FIGS. 3A and 3B, according to exemplary embodimentof the present disclosure;

FIG. 17 is another diagrammatic illustration of the attachment part ofFIG. 12 and the damaged automotive part of FIG. 15 during the executionof a step of the method of FIGS. 3A and 3B, according to exemplaryembodiment of the present disclosure;

FIG. 18 illustrates an additive manufacturing system, according to anexemplary embodiment of the present disclosure;

FIG. 19 is a diagrammatic illustration of another exemplary embodimentof the system of FIG. 1, according to an exemplary embodiment of thepresent disclosure, the system having a mobile unit and a handhelddevice;

FIG. 20 is a side view of the mobile unit of FIG. 19, according toexemplary embodiment of the present disclosure;

FIG. 21 is a sectional view of the mobile unit of FIG. 19, according toexemplary embodiment of the present disclosure;

FIG. 22 is a side view of the handheld device of FIG. 19, according toexemplary embodiment of the present disclosure;

FIG. 23 is a sectional view of the handheld device of FIG. 19, accordingto exemplary embodiment of the present disclosure;

FIG. 24 is an enlarged view of a portion of the handheld device of FIG.23, according to exemplary embodiment of the present disclosure;

FIG. 25 is a cross-sectional view of a portion of the handheld device ofFIG. 19, according to exemplary embodiment of the present disclosure;

FIG. 26 is a cross-sectional view of another portion of the handhelddevice of FIG. 19, according to exemplary embodiment of the presentdisclosure;

FIG. 27 is a diagrammatic illustration of the system of FIG. 19,according to an embodiment of the present disclosure;

FIG. 28 is a flow chart illustration of a method of operating the systemof FIG. 19, according to an exemplary embodiment of the presentdisclosure;

FIG. 29 is a flow chart illustration of a step of the method of FIG. 28,according to an exemplary embodiment of the present disclosure;

FIG. 30 is a flow chart illustration of another step of the method ofFIG. 28, according to an exemplary embodiment of the present disclosure;

FIGS. 31A and 31B together form a flow chart illustration of anotherstep of the method of FIG. 28, according to an exemplary embodiment ofthe present disclosure;

FIG. 32 is an illustration look-up table, according to an exemplaryembodiment of the present disclosure;

FIG. 33 is a sectional view of a portion of the handheld device of FIG.19 and a part during a step of the method of FIG. 28, according toexemplary embodiment of the present disclosure;

FIG. 34 is a sectional view of a portion of the handheld device of FIG.19 and the part during another step of the method of FIG. 28, accordingto exemplary embodiment of the present disclosure;

FIG. 35 is a sectional view of a portion of the handheld device of FIG.19 and the part during yet another step of the method of FIG. 28,according to exemplary embodiment of the present disclosure;

FIG. 36 is a flow chart illustration of yet another step of the methodof FIG. 28, according to an exemplary embodiment of the presentdisclosure;

FIG. 37 is a flow chart illustration of yet another step of the methodof FIG. 28, according to an exemplary embodiment of the presentdisclosure;

FIG. 38 is a flow chart illustration of yet another step of the methodof FIG. 28, according to an exemplary embodiment of the presentdisclosure; and

FIG. 39 is a diagrammatic illustration of a node for implementing one ormore exemplary embodiments of the present disclosure, according to anexemplary embodiment.

DETAILED DESCRIPTION

In an exemplary embodiment, as illustrated in FIG. 1, an automotiverepair system is generally referred to by the reference numeral 10. Aswill be described in further detail below, the automotive repair system10 may be used in whole or in part with several exemplary embodiments ofmethods and/or systems for repairing automotive parts, including methodsand/or systems that employ three-dimensional (3D) printing and/orthree-dimensionally printed parts such as, for example,three-dimensionally printed portions of automotive part, connector tabs,attachment parts, etc. As shown in FIG. 1, the automotive repair system10 includes a handheld device 15 and a controller 20 in communicationtherewith. A dispenser 25 and a regulator 30 are each in communicationwith the controller 20. In an exemplary embodiment, the controller 20includes a computer processor 20 a and a computer readable medium 20 boperably coupled thereto. Instructions accessible to, and executable by,the computer processor 20 a are stored on the computer readable medium20 b. A database 20 c is also stored in the computer readable medium 20b. The controller 20 includes, or is operably coupled to, an inputdevice and an output device. The input device and the output deviceinclude a graphical display, which, in several exemplary embodiments, isin the form of, or includes, one or more digital displays. In anexemplary embodiment, the output device includes a graphical display, aprinter, a plotter, and/or any combination thereof. In an exemplaryembodiment, the input device is the output device, and the output deviceis the input device. The system 10 further includes an accumulator 35that is operably coupled to, and in communication with, the regulator30. The handheld device 15 further includes a heater 40, a controller45, and a cooling device 50.

In an exemplary embodiment, as illustrated in FIG. 2 with continuedreference to FIG. 1, the handheld device 15 has a body 55 in which aconduit 60 extends. The conduit 60 is in fluid communication with, orfluidically coupled to, an extruder tip 65 that is configured to apply athermoplastic material 70 to an automotive part 75 to repair theautomotive part 75. While the thermoplastic material 70 is shown storedon a spool 77, the thermoplastic material 70 may be stored in anyvariety of ways. The conduit 60 may be formed from one or more tubulars,sheaths, tubing, pipes, or the like; passageways formed within the body55; or combination thereof. Generally, the conduit 60 is configured toconvey the thermoplastic material 70. In an exemplary embodiment, theconduit 60 or at least portion of the conduit 60 is thermally conductiveor otherwise configured to heat the thermoplastic material 70 conveyedwithin the conduit 60. Using the heater 40, the thermoplastic material70 is heated to, or above, a temperature corresponding to the meltingpoint of the thermoplastic material 70 and transitions to a fluidicthermoplastic material 70. The heater 40 heats the conduit 60 and/or thethermoplastic material 70 via conduction, convenient, or radiation. Inan exemplary embodiment, the heater 40 forms a portion of the conduit 60such that the thermoplastic material 70 flows through the heater 40. Theheater 40 may be an electric resistance heater, radiation heater, or thelike. The heater 40 is operably coupled to the controller 20 and/or thecontroller 45 such that one or both of the controller 20 and thecontroller 45 activates the heater 40 and controls the temperature towhich the conduit 60 and/or the thermoplastic material 70 is heated. Thefluidic thermoplastic material 70 is conveyed through the conduit 60 andthrough an opening formed in the extruder tip 65. In one embodiment, thehandheld device 15 further includes a valve that is operably coupled toone or both of the controller 20 and the controller 45, with the valveconfigured to stop, start, or otherwise control the flow of the fluidicthermoplastic material 70 through the conduit 60 and/or the extruder tip65. As shown, the handheld device 15, and thus the controller 45, isoperably coupled to the controller 20 via a control cord 80.Alternatively, the handheld device 15 and thus the controller 45 may bein wireless communication with the controller 20. In an exemplaryembodiment, the controller 45 is an on off switch. The opening of theextruder tip 65 may form any variety of different sized shapes such as acircle, rectangle, other parallelogram, oval, etc. The handheld device15 is configured to couple to and release the extruder tip 65 so thatany variety of different extruder tips may be coupled to the handhelddevice 15. For example, the extruder tip 65 may be coupled to thehandheld device 15 via corresponding internal and external threads. Thehandheld device 15 further includes a nozzle 85 that at least partiallysurrounds the extruder tip 65 or otherwise is configured to direct a gastowards the extruder tip 65 and/or the fluidic thermoplastic material 70that exits the opening in the extruder tip 65. The handheld device 15further includes a conduit 90 that is fluidically coupled to, and incommunication with, the nozzle 85 and the regulator 30 that regulatesthe flow of the gas through the conduit 90 when activated. The conduit90 is formed from one or more tubulars, tubing, pipes, or the like;passageways formed within the body 55; or combination thereof. Thehandheld device 15 is coupled to or includes an electrical power source.As shown, an electrical cord 95 couples the handheld device 15 to thecontroller 20, which includes a power source. However, the electricalpower source may be a battery that is located within the handheld device15 or the like. In an exemplary embodiment, the regulator 30 is operablycoupled to the accumulator 35, and the controller 20 is operably coupledto, and in communication with, the regulator 30 to control the flow rateat which a gas is released from the accumulator 35. In an exemplaryembodiment, the gas is nitrogen. However, the gas may be any variety ofgas and is not limited to nitrogen. The controller 20 is also operablycoupled to, and in communication with, the dispenser 25. The dispenser25 is configured to convey the thermoplastic material 70 into theconduit 60. In an exemplary embodiment, the dispenser 25 is or includesa stepper motor. When the thermoplastic material 70 is a thermoplasticfilament or tube having a consistent circumference, the flow rate atwhich the thermoplastic material 70 is conveyed through the conduit 60is based on the speed at which the filament is conveyed or fed into theconduit 60.

In one or more exemplary embodiments, as illustrated in FIGS. 3A and 3Bwith continuing reference to FIGS. 1-2, a method of operating the system10 is generally referred to by the reference numeral 100. In severalexemplary embodiments, the method 100 is performed to repair the damagedautomotive part 75. The method 100 includes identifying a damagedportion of the automotive part 75 at step 105, determining a level ofrepair needed to repair the damaged portion of the automotive part 75 atstep 110, and determining whether the repair needed is the first levelof repair at step 115. If it is determined that the first level ofrepair is needed at the step 115, then the method 100 further comprisesselecting an extruder tip at step 125, determining input parameters atstep 130, controlling the automotive repair system 10 based on the inputparameters at step 135, and applying the fluidic thermoplastic material70 to the automotive part 75 to repair the automotive part 75 at step140. Returning to the step 115, and if it is determined that the neededrepair is not the first level of repair, then the method 100 furthercomprises determining whether the needed repair is a second level ofrepair at step 145. If it is determined that the needed repair is thesecond level of repair at the step 145, then the method 100 furthercomprises determining whether an existing connector tab satisfies thecurrent repair needs at step 150. If it is determined that an existingtab does not satisfy the current repair needs at the step 150, then themethod 100 further comprises customizing an existing connector tab atstep 155. Returning to the step 150, if it is determined that theexisting tab does satisfy the current repair needs, then the next stepis the step 160. After completing the steps 150 and 155, the method 100further comprises selecting an extruder tip at the step 160, determininginput parameters at step 165, controlling the automotive repair system10 based on the input parameters at step 170, and attaching the existingtab or the customized tab to the automotive part 75 using the fluidicthermoplastic material 70 to repair the automotive part 75 at step 175.Returning to the step 145, and if it is determined that the neededrepair is not the second level of repair, then the method 100 furthercomprises determining whether a third level of repair is needed at step180. If it is determined that the third level of repair is needed atstep 180, then the method 100 further comprises identifying a restorableportion of the automotive part 75 at step 185, creating a model of anattachment part that includes the restorable portion and a retainerportion at step 190, printing the attachment part that includes therestorable portion and the retainer portion based on the model of theattachment portion at step 195, selecting an extruder tip at step 200,determining input parameters at step 205, controlling the automotiverepair system 10 based on the input parameters at step 210, andattaching the attachment part to the automotive part 75 using thefluidic thermoplastic material 70 to repair the automotive part 75 atstep 215. Returning to the step 180, and if it is determined that thethird level of repair is not needed at the step 180, then the method 100further comprises replacing the automotive part 75 with a new part whenthe repair needed is not the first level, the second level, or the thirdlevel of repair at step 220.

As illustrated in FIG. 4, the step 105 includes identifying a damagedportion 75 a of the automotive part 75 or inspecting the automotive part75. As shown, the damaged portion 75 a includes a portion having a tearin a body of the automotive part 75. However, the damaged portion 75 amay include a portion having a scratch in the body of the automotivepart 75, a portion missing from the body of the automotive part 75, andthe like.

At the step 110, the level of repair needed to repair the damagedportion 75 a of the automotive part 75 is determined. Generally, thefirst level of repair is a repair in which the thermoplastic material 70replaces a missing portion of the automotive part 75 that was associatedwith the damaged portion 75 a of the automotive part 75, such as a tear,a scratch, etc. However, the first level of repair is also a repair thatjoins together two separate sections of the automotive part 75 that werepreviously joined together. The second level of repair is a repair inwhich the thermoplastic material 70 attaches the existing connector tabor the customized connector tab, which is the missing portion of theautomotive part 75, to the automotive part to repair the automotive part75. The third level of repair is a repair in which the thermoplasticmaterial 70 attaches the attachment part to the automotive part 75 torepair the automotive part 75, with attachment part including therestorable portion of the automotive part and the first retainerportion. The level of repair needed to repair the automotive part 75 maybe determined by an automotive repair specialist or by scanning theautomotive part using a computer system.

At the step 115, it is determined whether the needed repair is firstlevel of repair. If a first level of repair is needed, then the nextstep is selecting an appropriate extruder tip 65 at the step 125. Aplurality of extruder tips may be available, each having differentopening shapes and gauges, or sizes. For example, an extruder tip may beround and highly tapered, which is often suitable for applying fluidicthermoplastic material to form structures or connectors shaped like arivet or a nail. Alternatively, another extruder tip may be smaller formore intricate repairs and yet another extruder tip may have an openingthat is generally rectangular and between about 13-15 millimeters wideand about 1 millimeter tall to repair large cracks or stitch cracks inthe automotive part 75 together. Thus, for a first level of repair, theappropriate extruder tip 65 may have a generally rectangular openingsuch that the fluidic thermoplastic material 70 exits the extruder tipin a ribbon-like shape. At the step 130, the input parameters aredetermined. The input parameters are inputs associated with the expectedrepair. The input parameters may any one or more of parametersindicating material(s) of which the thermoplastic material 70 iscomposed (i.e., polypropylene, polyethylene); the level of repair (i.e.,the first level, the second level, or the third level); thecircumference of the thermoplastic material filament that is beingconveyed through the conduit 60; the melting point of the thermoplasticmaterial 70; and the type of extruder tip 65. The input parameters maybe determined by an automotive specialist or by the computer system.

In an exemplary embodiment, and as illustrated in FIG. 5, the step 135of controlling the automotive repair system 10 based on the inputparameters comprises substeps of receiving, at the controller 20, inputparameters at step 135 a; identifying a predetermined temperature towhich the thermoplastic material 70 is heated based on the receivedinput parameters at step 135 b; identifying a predetermined flow rate atwhich the thermoplastic material 70 is to be conveyed through theconduit 60 of a handheld device 15 based on the received inputparameters at step 135 c; conveying the thermoplastic material 70through the conduit 60 using the predetermined flow rate at step 135 d;and heating the thermoplastic material 70 to the predeterminedtemperature at step 135 e. At the step 135 a, the input parameters maybe received at the controller 20 from the automotive specialist usingthe input device. In response to receiving the input parameters, thecontroller 20 identifies the predetermined temperature and identifiesthe predetermined flow rate at which the thermoplastic material 70 is tobe conveyed through the conduit 60. The controller 20 then activates theheater 40 to heat the thermoplastic material 70 and/or the conduit 60 tothe predetermined temperature and activates the dispenser 25 to conveythe thermoplastic material 70 through the conduit 60 at thepredetermined flow rate. For example and looking again to FIG. 4, thecontroller 20 has received input parameters indicating that the level ofrepair needed is the first level of repair and the material(s) of whichthe thermoplastic material 70 is composed is polypropylene (“PP”). Inresponse, the controller 20 identifies a predetermined flow rate atwhich the PP thermoplastic material 70 should be conveyed through theconduit 60 and instructs the dispenser 25 to convey the PP thermoplasticmaterial 70 through the conduit 60 at the predetermined flow rate.Additionally, the controller 20 identifies a predetermined temperatureto which the PP thermoplastic material 70 should be heated so that thePP thermoplastic material 70 becomes a fluidic PP thermoplastic material70 and instructs the heater 40 to heat at least a portion of thethermoplastic material 70 and/or the conduit 60 to the predeterminedtemperature. In an exemplary embodiment, the automotive specialist maychange, or fine tune, the flow rate of the thermoplastic material 70 andthe temperature to which the thermoplastic material 70 is heated usingthe input device of the controller 20.

At the step 140, the fluidic thermoplastic material 70 is applied to thedamaged portion 75 a of the automotive part 75. That is, after the inputparameters are received and the system 10 is adjusted based on the inputparameters, the automotive specialist picks up the handheld device 15,with the specialist's hand, and places the extruder tip 65 near or onthe damaged portion 75 a of the automotive part 75. This applicationallows for a consistent application of the fluidic thermoplasticmaterial 70 to the automotive part 75 and avoids a trial-and-errorapproach by the automotive specialist to heat the thermoplastic material70 to the predetermined temperature and maintain that temperature asnecessary during the repair of the automotive part 75. Through use ofthe controller 45, the automotive specialist can easily stop, start, orotherwise control the flow of fluidic thermoplastic material 70 throughthe valve and therefore, the extruder tip 65. The cooling device 50,which in an exemplary embodiment is the nozzle 85 when the nozzle isdispersing the gas, cools the fluidic thermoplastic material 70 whenneeded to prevent the thermoplastic material 70 from burning. When thecooling device 50 is the nozzle 85 dispersing the gas, the gas alsoprevents or at least discourages exposing the fluidic thermoplasticmaterial 70 to oxygen or other impurities. Reducing or avoiding theexposure of the thermoplastic material 70 to the oxygen or otherimpurities strengths a bond formed between the thermoplastic material 70and the automotive part 75. In an exemplary embodiment, the nozzle 85includes a gas diffuser or includes a gas diffuser. However, in otherembodiments, the cooling device 50 is a fan or the like. Once applied tothe automotive part 75, the fluidic thermoplastic material 70 cools tobecome a hardened thermoplastic material. As shown in FIG. 4, thefluidic thermoplastic material 70 is applied to a tear in the body ofthe automotive part 75 to stitch, sew, or otherwise repair the tear.Thus, the fluidic thermoplastic material 70 is applied to the automotivepart 75 and hardens to form a missing piece of the automotive part 75 orjoin together two portions of the automotive part 75.

Returning to the step 115, when it is determined that the level ofrepair needed is not the first level of repair, then the next step isthe step 145. At the step 145, it is determined whether the neededrepair is the second level of repair. For example, and referring to FIG.6, the damaged portion 75 a of the automotive part 75 is missing aconnector that is identical to the connector 75 b. Often, when a secondlevel of repair is needed, an area surrounding the damaged portion 75 aof the automotive part 75 is prepped to receive the connector tab or thecustomized connector tab. This may include removing additional materialfrom the automotive part 75 via sanding, cutting, etc. FIG. 7illustrates the automotive part 75 when the automotive part 75 isprepped to receive the connector tab or the customized connector tab,according to an exemplary embodiment.

At the step 150, it is determined whether an existing connector tab,such as an existing connector tab 225 as shown in FIG. 8, satisfies therepair needs. The existing connector tab 225 has a length measured alonga direction indicated by the numeral 230 in FIG. 8; a width measuredalong a direction indicated by the numeral 235 in FIG. 8; and a heightmeasured along a direction indicated by the numeral 240 in FIG. 8.Generally, the existing connector tab 225 forms a retainer portion 245and a coupler portion 250. In an exemplary embodiment, the retainerportion 245 acts as a “footer” for the existing connector tab 225. In anexemplary embodiment, a plurality of holes 255 are formed through theretainer portion 245, with the plurality of holes 255 being configuredto receive the thermoplastic material 70 to secure the retainer portion245 to the automotive part 75. In an exemplary embodiment, the retainerportion 245 has a first length. In an exemplary embodiment, the couplerportion 250 corresponds with a coupler 257 formed in another automotivepart 260. Generally, the coupler portion 250 is configured to operablyengage the coupler 257 of the automotive part 260. In an exemplaryembodiment the coupler portion 250 is a male coupler or snap insert andthe coupler 257 is a female coupler. However, the coupler portion 250may form a hole or female coupler. The retainer portion 245 has a heightthat is less than the height of the coupler portion 250 to form ashoulder 265 at the intersection of the retainer portion 245 and thecoupler portion 250. The step 150 may include determining whether thefirst length of the retainer portion 245 is sized to attach to theautomotive part 75. If the first length of the retainer portion 245 istoo long or the existing connector tab 225 otherwise does not satisfythe repair needs, then the next step is the step 155.

At the step 155, the existing connector tab 225 may be customized bytrimming the retainer portion 245 to a second length that is shorterthan the first length to form a customized connector tab 225′. However,the existing tab 225 may be altered in any variety of ways to form thecustomized connector tab 225′, such as reducing the length of thecoupler portion 250 and the like.

At the step 160, the extruder tip 65 is selected. The step 160 issubstantially similar to the step 125. Therefore, additional detailswill not be provided here. At step 165, the input parameters aredetermined. The step 165 is substantially similar to the step 130 exceptthat one of the input parameters is that a second level of repair isneeded instead of the first level of repair is needed, which may alterthe flow rate at which the thermoplastic material 70 is conveyed throughthe conduit 60, among other parameters. For example, the flow rateassociated with a second level of repair may be greater than the flowrate associated with a first level of repair. Additionally, the step 170of controlling the automotive repair system 10 based on the inputparameters is substantially similar to the step 135 and therefore,additional details will not be provided here.

At the step 175, the connector tab 225 or the customized connector tab225′ is attached to the automotive part 75 using the fluidicthermoplastic material 70. The step 175 is similar to the step 140.However, the automotive specialist stitches or sews the customizedconnector tab 225′ to the automotive part 75 by directing the fluidicthermoplastic material 70 into the plurality of holes 255. Using theautomotive repair system 10, the automotive specialist is capable ofplacing the customized connector tab 225′ in the desired position withone hand and then applying the thermoplastic material 70 to thecustomized connector tab 225′ with his or her other hand. As shown inFIGS. 9 and 10, the customized connector tab 225′ is attached to theautomotive part 75 such that the coupler portion 250 extends away fromthe automotive part 75 and the retainer portion 245 is coupled to theautomotive part 75 via the thermoplastic material 70. The plurality ofholes 255 retains the thermoplastic material 70 and provides additionalsurface area to which the thermoplastic material 70 is applied onto. Theshoulder 265 encourages proper alignment of the customized connector tab225′ with the automotive part 75 as the shoulder 265 engages with acorresponding shoulder or edge of the automotive part 75. Thethermoplastic material 70 is sandwiched between the automotive part 75and the retainer portion 245 as well as accommodated within theplurality of holes 255. The customized connector tab 225′ is attached toreplace the missing piece of the automotive part 75 to repair theautomotive part 75.

Returning to the step 145, and when it is determined that the level ofrepair needed is not the second level of repair, the next step is thestep 180. At the step 180, it is determined whether the third level ofrepair is needed to repair the damaged portion 75 a of the automotivepart 75. An example of when the level of repair needed is a third levelof repair is illustrated in FIG. 11. FIG. 11 illustrates a damagedattachment portion 75 c that has broken away or otherwise been removedfrom the automotive part 75. The first and the second level of repairmay not sufficiently repair the damaged attachment portion 75 c. Thus, athird level of repair is needed so that the thermoplastic material 70attaches, to the automotive part 75, an attachment part 270 (shown inFIGS. 12 and 13) to replace the damaged attachment portion 75 c. When itis determined at the step 180 that the third level of repair is needed,then the next step is the step 185. At the step 185, a restorableportion of the automotive part 75 is identified. Generally, therestorable portion is a portion of the automotive part 75 that hasdetached from the automotive part 75, such as the damaged attachmentportion 75 c.

At the step 190, a model of the attachment part 270 is created. In anexemplary embodiment, the step 190 comprises one of more substeps, asillustrated in FIG. 14, that include accessing an electronic model ofthe automotive part 75 at step 190 a, identifying the restorable portionof the electronic model of the automotive part at step 190 b,determining whether the restorable portion of the electronic modelcomplies with one or more business rules at step 190 c, isolating therestorable portion of the electronic model for printing at step 190 d,and adding a retainer portion model to the restorable portion of theelectronic model to create the model of the attachment part 270 at step190 e. Generally, the electronic model of the automotive part isaccessed using a computer system, 3-D modeling software and files, suchas sterolithography software and files. Determining whether therestorable portion of the electronic model complies with one or morebusiness rules may include determining whether the volume associatedwith the restorable portion of the model exceeds a predeterminedpercentage of the total volume of the automotive part 75; whether therestorable portion of the model is categorized as a “do not print”portion; whether the restorable portion of the model exceeds printingcapabilities, etc. In an exemplary embodiment, the step 190 c may beexecuted by an automotive specialist or by a computer system. At thestep 195, the attachment part 270 is printed or otherwise manufacturedvia additive manufacturing, based on the model of the attachment part.In an exemplary embodiment and referring back to FIGS. 12 and 13, theattachment part 270 includes at least one retainer portion 275configured to attach to the automotive part 75. The retainer portion(s)275 forms a plurality of holes 285 configured to receive thethermoplastic material 70 to secure the retainer portion(s) 275 to theautomotive part 75. The attachment part 270 also includes a restorableportion 280 that defines a shape corresponding to a portion of theautomotive part 75. The restorable portion 280 may also form a coupler290 that operably couples with another coupler on a second automotivepart (not shown). Sections of the restorable portion 280 may be offsetfrom the retainer portion(s) 275 such that, when attached to theautomotive part, the offsets form female couplers. In an exemplaryembodiment, the retainer portion 275 extends in a plane that isgenerally perpendicular to a plane in which the restorable portion 280extends; as a result, when the retainer portion 275 is attached to theautomotive part 75, the restorable portion 280 cantilevers outwardlyfrom the automotive part 75.

At the step 200, the extruder tip 65 is selected. The step 200 issubstantially similar to the step 125. Therefore, additional detailswill not be provided here. At step 205, the input parameters aredetermined. The step 205 is substantially similar to the step 130 exceptthat one of the input parameters is that a third level of repair,instead of the first level of repair, is needed. Additionally, the step210 of controlling the automotive repair system 10 based on the inputparameters is substantially similar to the step 135 and therefore,additional details will not be provided here. The step 215 of attachingthe attachment part to automotive part 75 using the fluidicthermoplastic material 70 is substantially similar to the step 175.However, the retainer portion(s) 275 are spaced and shaped such thateach couple to the automotive part 75, as shown in FIGS. 16 and 17. Thethermoplastic material 70 is sandwiched between the retainer portion(s)275 and the automotive part 75 and is also accommodated in the pluralityof holes 285.

Returning to the step 180, and when the level of repair needed is notthe third level, then the next step is the step 220. At the step 220,and if the repair needed is not the first, second, or third level ofrepair, then the automotive part 75 is replaced with a new automotivepart.

In an exemplary embodiment and as shown in FIG. 18, a printing system300 includes one or more computers 305 and a printer 310 that areoperably coupled together, and in communication via a network 315. Inone or more exemplary embodiments, the attachment part 270 and/or theexisting connector tab 225 may be manufactured using the printing system300. In one or more exemplary embodiments, the one or more computers 305include a computer processor 320 and a computer readable medium 325operably coupled thereto. In one or more exemplary embodiments, thecomputer processor 320 includes one or more processors. Instructionsaccessible to, and executable by, the computer processor 320 are storedon the computer readable medium 325. A database 330 is also stored inthe computer readable medium 325. In one or more exemplary embodiments,the computer 305 also includes an input device 335 and an output device340. In one or more exemplary embodiments, web browser software isstored in the computer readable medium 325. In one or more exemplaryembodiments, three dimensional modeling software is stored in thecomputer readable medium. In one or more exemplary embodiments, softwareinvolving finite element analysis and the optimization of the automotiveconnector tab 225 and/or the automotive attachment part 270 is stored inthe computer readable medium 325. In one or more exemplary embodiments,any one or more constraints are entered in the input device 385 suchthat the software aids in the design on the automotive connector tab 225and/or the automotive attachment part 270. In one or more exemplaryembodiments, the input device 335 is a keyboard, mouse, or other devicecoupled to the computer 305 that sends instructions to the computer 305.In one or more exemplary embodiments, the input device 335 and theoutput device 340 include a graphical display, which, in severalexemplary embodiments, is in the form of, or includes, one or moredigital displays.

In one or more exemplary embodiments, the printer 310 is athree-dimensional printer. In one or more exemplary embodiments, theprinter 310 includes a layer deposition mechanism for depositingmaterial in successive adjacent layers; and a bonding mechanism forselectively bonding one or more materials deposited in each layer. Inone or more exemplary embodiments, the printer 310 is arranged to form aunitary printed body by depositing and selectively bonding a pluralityof layers of material one on top of the other. In one or more exemplaryembodiments, the printer 310 is arranged to deposit and selectively bondtwo or more different materials in each layer, and wherein the bondingmechanism includes a first device for bonding a first material in eachlayer and a second device, different from the first device, for bondinga second material in each layer. In one or more exemplary embodiments,the first device is an ink jet printer for selectively applying asolvent, activator or adhesive onto a deposited layer of material. Inone or more exemplary embodiments, the second device is a laser forselectively sintering material in a deposited layer of material. In oneor more exemplary embodiments, the layer deposition means includes adevice for selectively depositing at least the first and secondmaterials in each layer. In one or more exemplary embodiments, any oneof the two or more different materials may beAcrylonitrile-Butadiene-Styrene or ABS plastic, Polylactic acid or PLA,polyamide, aluminum, glass filled polyamide, sterolithography materials,silver, titanium, steel, wax, photopolymers, polycarbonate, and avariety of other materials. In one or more exemplary embodiments, theprinter 310 may involve fused deposition modeling, selective lasersintering, and/or multi jet modeling. In operation, the computerprocessor 320 executes a plurality of instructions stored on thecomputer readable medium 325. As a result, the computer 305 communicateswith the printer 310, causing the printer 310 to manufacture theautomotive connector tab 225 and/or the automotive attachment part 270or at least a portion thereof. In one or more exemplary embodiments,manufacturing the automotive connector tab 225 and automotive attachmentpart 270 using the system 300 results in an integrally formed automotiveconnector tab 225 and/or an integrally formed automotive attachment part270.

During operation of the system 300, the computer processor 320 executesthe plurality of instructions that causes the manufacture of theautomotive connector tab 225 and/or the automotive attachment part 270using additive manufacturing. Thus, the automotive connector tab 225and/or the automotive attachment part 270 are at least partiallymanufactured using an additive manufacturing process. Manufacturing theautomotive connector tab 225 and/or the automotive attachment part 270via injection molding processes often is time consuming and expensive.Thus, with additive manufacturing, custom automotive repair parts, suchas the attachment part 270 may be created on-demand resulting on customrepair of the automotive part 75. In one or more exemplary embodiments,the use of three-dimensional, or additive, manufacturing to manufactureautomotive repair parts or portions thereof, such as the automotiveconnector tab 225 and/or the automotive attachment part 270, will allowincreased flexibility in repair of automotive parts and will decreasethe time required to repair the automotive part 75.

In an exemplary embodiment, each of the automotive connector tab 225;the automotive attachment part 270; the thermoplastic material 70; andthe automotive part 75 comprises a polypropylene material, apolyethylene material, an Acrylonitrile-Butadiene-Styrene or ABSplastic, Polylactic acid or PLA, thermoplastic olefins (TPOs),polycarbonates, polyesters, polyurethanes, or polyamides, or blends ofthese with, for instance, glass fibers, etc. Generally, each of theautomotive connector tab 225; the automotive attachment part 270; thethermoplastic material 70; and the automotive part 75 may be composed ofa metal material, a non-metal material, or any plastic material. In anexemplary embodiment, the composition of the automotive connector tab225 and/or the automotive attachment part 270 is dependent upon thecomposition of the automotive part 75 and/or the thermoplastic material70. Additionally, the selection of the thermoplastic material 70 isdependent upon the composition of the automotive connector tab 225, theautomotive attachment part 270, and/or the automotive part 75. Forexample, when the automotive part 75 is composed of a polypropylenematerial, the attachment part 270 may be printed using a polypropylenematerial and the thermoplastic material may be composed of apolypropylene. Thus, when the same material is used for the attachmentpart 270, the automotive part 75, and the thermoplastic material 70, theexecution of the method 100 effectively welds the attachment part 270 tothe automotive part 75 using the thermoplastic material 70.

In an exemplary embodiment, the automotive repair system 10 and/orexecution of the method 100 provides a consistent and quick method ofrepair for the damaged automotive part 75. For example, localenvironmental factors (i.e., humidity and oxygen content in a repairshop) have reduced effects on the method 100 and the ultimate repair ofthe automotive part 75 when compared to conventional methods of repairinvolving two-part epoxies and the like. Thus, bonds created—using thethermoplastic material 70—between the attachment part 270 and/or theconnector tab 225 and the automotive part 75 are more consistent thanconventional methods of repair. Additionally, repairing the automotivepart 75 instead of replacing the automotive part 75 can reduce theoverall “shop time” (i.e., the amount of time during which the car is inthe shop for repairs) by hours or days because the wait for areplacement part is no longer required.

Moreover, the ability to create the attachment part 270, using themethod 100, increases the flexibility and scope of feasible repairs forthe automotive part 75. That is, the method 100 allows for the repair ofautomotive parts that were previously, using the conventional methods ofrepair, irreparable. Thus, the method 100 prevents a new part from beingpurchased to replace the automotive part 75, which would be discarded.Therefore, the use of the automotive repair system 10 and/or theexecution of the method 100 results in less wasted materials (i.e., thediscarded damaged parts) compared to conventional methods of automotiverepair. Moreover, the handheld device 15 increases the automotivespecialist's mobility and only requires one hand to disperse and heatthe thermoplastic material 70. This greatly increases the speed andaccuracy of the repair when compared to a filament-and-rod method, andreduces the number of man-hours required for a repair when compared withconventional methods of automotive repair. Moreover, when the attachmentpart 270 and/or the connector tab 225 is composed of the same materialas the thermoplastic material 70 and is attached to the automotive part75 using the thermoplastic material 70, the bond between the attachmentpart 270 and/or the connector tab 225 is stronger than the bondresulting from conventional automotive repairs. Thus, the tensilestrength associated with the now-repaired damaged portion 75 a of theautomotive part 75 is greater than the tensile strength of theautomotive part prior to being damaged. Additionally, during theexecution of the method 100 and during use of the system 10, the fluidicthermoplastic material 70 may be applied directly to the attachment part270, the connector tab 225, and/or the automotive part 75. Thus, the useof adhesion promoters (among other products and steps) is reduced oravoided. Thus, use of the system 10 and/or execution of the method 100reduces the materials (and cost) needed to complete the repair; reducesthe carbon footprint associated with completing the repair; and reducesthe time required to complete the repair.

The system 10 and/or the method 100 may be altered in a variety of ways.For example, while the handheld device 15 is shown in FIGS. 2 and 4 asbeing remote from the controller 20, the dispenser 25, the regulator 30,and the accumulator 35, the handheld device 15 may include thecontroller 20, the dispenser 25, the regulator 30, and the accumulator35. Additionally, the handheld device 15 may include another dispenserthat is substantially similar to the dispenser 25 such that thedispenser 25 pushes the thermoplastic material 70 through the conduit 60while the dispenser located in the handheld device 15 pulls thethermoplastic material 70 through the conduit 60. Additionally, whilethe conduit 60 as shown in FIG. 2 extends from the dispenser 25 andthrough the handheld device 15 to the extruder tip 65, the thermoplasticmaterial 70 may be conveyed through any variety of channels orpassageways formed within the handheld device to the extruder tip 65.While the conduit 60 is shown extending through the body 55 of thehandheld device 15 in FIG. 2, in other embodiments the conduit 60 doesnot extend through the body 55. Instead, the conduit 60 may be coupledto the body 55 or may be simply coupled to the extruder tip 65.Additionally, the amount of gas released by the regulator 30 may bebased on the input parameters such that, in response to receiving theinput parameters, the controller 20 identifies a predetermined amount ofthe gas to be released. The controller 20 may then activate theregulator 30 to release the predetermined amount of the gas such thatthe predetermined amount of gas is released towards and/or around theextruder tip 65. In another embodiment, the handheld device 15 may bewirelessly coupled to the controller 20 via a network. In an exemplaryembodiment, the method 100 is automated using a computer system. Forexample, the automotive part 75 may be reviewed or inspected using acomputer system, which also determines the level of repair needed torepair the part, creates the attachment part, and even attaches theattachment part. In an exemplary embodiment, the determined inputparameters at the steps 130, 165, and 205 are the same. In an exemplaryembodiment, the system 10 may be controlled in the same mannerregardless of whether the level of repair needed is the second level ofrepair or the third level of repair. That is, the input parametersassociated with the first level of repair, the second level of repair,or the third level of repair may result in the same predeterminedtemperature to which the thermoplastic material 70 is heated and/or thesame predetermined flow rate at which the thermoplastic material 70 isconveyed through the conduit 60. In an exemplary embodiment, theautomotive repair system 10 and/or the method 100 is not limited toautomotive repair. For example and in one embodiment, the automotiverepair system 10 and/or the method 100 is used to repair a damaged partor portion of an aircraft, a toy, a watercraft, or another type ofmechanical and electrical system, such as industrial equipment, etc. Inan exemplary embodiment, the system 10 and/or the method 100 results ina repair or replacement of a cap, a lid, a housing, a portion of ahousing, or any other portion of an automotive part that is damaged ormissing.

As illustrated in FIGS. 19-21, another embodiment of the repair system10 is generally referred to by the reference numeral 400. Generally, therepair system 400 includes a mobile unit 405 operably coupled to ahandheld device 410, a remote controller 415, and a gas source 420,which may include, or be, the accumulator 35. The mobile unit 405includes a housing 425 that houses the spool 77 of the solidthermoplastic material 70, which is also referred to as filament. Insome embodiments, the mobile unit 405 also includes the dispenser 25,the controller 20, and the regulator 30. Moreover, the mobile unit 405includes a power supply outlet 430 exposed on an exterior of the housing425, a handheld dispenser connection 435, a remote controller connection440, input buttons 445, a graphical user interface 450, a gas connection455 to the gas source 420, and a power cord 460 that operably couples toa power supply 462. The remote controller connection 440 is operablycoupled to each of the controller 20 and the remote controller 415. Thepower supply outlet 430 is operably coupled to the power cord 460 andthe power supply 462 and provides convenient access to an electricaloutlet for the user of the mobile unit 405. For example, a solderingiron may be powered via the power supply outlet 430. The gas connection455 is configured to place the gas source 420 in communication with theregulator 30 or gas valve, which may be a gas solenoid valve. Thecontroller 20 is in communication with and controls the operation of theregulator 30 to selectively allow a gas to flow thorough the regulator30 and to the handheld dispenser connection 435. The controller 20 is incommunication with the dispenser 25 to control the flow of thethermoplastic 70 from the spool 77 and to the handheld device 410 viathe connection 435 and the conduit 60. The remote controller 415 asshown in FIG. 19 is a pedal that is actuated by a user's foot and thusis a pedal controller. However, the remote controller 415 may be anothertype of remote actuation device, such as a trigger located on thehandheld device 410 or elsewhere. In some embodiments, instructions orinputs may be received by the controller 20 via depression of the pedalof the remote controller 415. While the remote controller 415 isphysically coupled to the mobile unit 405 and the controller 20 via theremote controller connection 440 in FIG. 19, the remote controller 415is in wireless communication with the controller 20 in some embodiments.

In an exemplary embodiment, and as illustrated in FIGS. 22-26 withcontinued reference to FIGS. 19-21, the handheld device 410 has a body465 and a head 470 that is coupled to the body 465. Generally, the body465 includes the heater 40 and a graspable surface while the filament 70is conveyed through and heated in the head 470. The handheld device 410is another embodiment of the handheld device 15.

The head 470 includes a housing 472 to which the tip 65 is detachablycoupled. The extruder tip has an interior passageway 65 a extendingbetween an inlet 65 b and a tip outlet 65 c. The housing 472 may includeany one of the cooling device 50, a tubular 480, and the nozzle 85, andgenerally forms an interior passageway 472 a through which the filament70 is conveyed. In some embodiments, the cooling device 50 forms aportion of the interior passageway 472 a. The portion of the interiorpassageway 472 a formed by the cooling device 50 is in fluidcommunication with the interior passageway 65 a of the tip 65 such thatthe solid thermoplastic material 70 passes through the portion of theinterior passageway 472 a formed by the cooling device 50 and into aninlet 65 b. The head 470 also includes a quick connection 485 thatcouples and decouples the conduit 60 to the housing 472. While thecooling device 50 depicted in FIGS. 22-24 is an air-cooled heat sinkthat cools a portion of tip 65, the tubular 480, the quick connection485, and/or the conduit 60, the cooling device 50 may be any variety ofheat sinks, such as a water-cooled heat sink, or other liquid and/or gasheat sinks. The solid thermoplastic material 70 or filament is conveyedthrough the conduit 60, the interior passageway 472 a, and the interiorpassageway 65 a of the tip 65 prior to exiting via the tip outlet 65 cof the tip 65 as a fluidic thermoplastic material. At least a portion ofthe housing 472, such as the tubular 480, is disposed around at least aportion of tip 65 to form an annulus 490 between the exterior surface ofthe tip 65 and the interior surface of the tubular 480. In someembodiments, the annulus 490 is fluidically isolated from the interiorpassageway 65 a of the tip 65. The nozzle 85 is a tubular forming apassageway 85 a and has an end surface 85 b. The nozzle 85 surrounds thetip 65 to form an annulus 495 between an interior surface of the nozzle85 and an exterior surface of the tip 65. In some instances, the nozzle85 is concentrically disposed about the tip 65. Generally, at least aportion of the tip 65 extends within the passageway 85 a of the nozzle85 and another portion of the tip 65 extends beyond the end surface 85 bof the nozzle such that the tip outlet 65 c is spaced from the endsurface 85 b of the nozzle 85 by an offset dimension 497. Moreover, theexterior surface of the tip 65 and the end surface 85 b of the nozzledefine a shoulder 505, with the end surface 85 b of the nozzle 85 beingradially spaced from the exterior surface of the tip 65 by the annulus495. The dimension 497 is generally a dimension that is twice thethickness of a part that is to be repaired, such as the part 75. Forexample, if the thickness of the part 75 is approximately 6 millimeters,the tip 65 is attached to the housing 472 such that the dimension 497 isapproximately 12 millimeters. To change the dimension 497, the positionof the tip 65 may be moved relative to the nozzle 85 and/or the tip 65may be detached from the housing 472 and another tip having a differentlength than the tip 65 may be attached to the housing 472. The tip 65 isdetachably coupled to the housing 472 in a variety of ways, such as afriction fit, using threaded connection, etc. In some embodiments, thetip 65 is approximately 2.5 inches long.

The annuli 490 and 495 are in fluid communication with each other and influid communication with a conduit 507 that extends between the head 470and the body 465. A heat sensor 510 is accommodated within the conduit507 or in a chamber 515 that is in fluid communication with the conduit507 and that is formed in a housing 520 coupled to the head 470.However, the heat sensor 510 can be located anywhere within or along thebody 465 or the head 470 to sense the temperature of a gas that enters,or is already within, the annulus 500 or the annulus 495. As shown, theheat sensor 510 is coupled to the controller 20 via a cable 525.However, the heat sensor 510 can also be in wireless communication withthe controller 20 in some embodiments.

Generally, the body 465 includes a housing 530 that may include any oneor more of a graspable handle portion 535, the heater 40, and a guard orstop 540 positioned between the handle portion 535 and the heater 40.The housing 530 forms an interior passageway 545 that is in fluidcommunication with the conduit 90, an interior passageway 551 of theheater 40, and the conduit 507 such that the gas from the gas source 420is conveyed through the conduit 90, the interior passageways 545 and551, and the conduit 507 to the annuli 490 and 495. However, in someembodiments, the heater 40 does not form the interior passageway 551 andthe heater 40 is merely located within the interior passageway 545. Oneor more flow sensors 550 is positioned in the interior passageway 545 tosense and/or measure the flow of the gas through the interior passageway545. The flow sensor 550 is in communication with or operably coupled tothe controller 20. In some embodiments, the exterior of the handleportion 535 is formed with a heat resistant material. In someembodiments, the guard or stop 540 prevents or discourages a user fromcontacting an exterior surface of the heater 40 and/or the portion ofthe housing 530 in which the heater 40 extends. In some embodiments, theheater 40 is a 1200w ceramic variable resister. In some embodiments, theflow sensor 550 is an infrared flow meter.

FIG. 27 is a diagrammatic illustration of the system 400. The controller20 is operably coupled to the power supply 462, the flow sensor 550, theheat sensor 510, the heater 40, the regulator 30, the dispenser 25, auser interface 555, and the remote controller 415. The controller 20receives inputs, instructions, information, and/or data from the heatsensor 510, the flow sensor 550, and the user interface 555. The userinterface 555 includes one or more input devices, such as the inputbuttons 445, the graphical user interface 450, and the remote controller415, each of which is operably coupled to the controller 20. Thus, thecontroller 20 receives inputs, instructions, information, and/or dataany one of the input buttons 445, the graphical user interface 450, andthe remote controller 414. The user interface 555 also includes anoutput device, such as the graphical user interface 450, which is alsooperably coupled to the controller 20. Using the received inputs,information, and/or data, the controller 20 controls the operation ofthe dispenser 25, the regulator 30, the heater 40, and the userinterface 555. In an exemplary embodiment, the controller 20 includesthe computer processor 20 a and the computer readable medium 20 boperably coupled thereto. Instructions accessible to, and executable by,the computer processor 20 a are stored on the computer readable medium20 b. The database 20 c is also stored in the computer readable medium20 b. In one embodiment, the power supply 462 is a battery althoughother types of power supplies are contemplated here.

In one or more exemplary embodiments, as illustrated in FIG. 28 withcontinuing reference to FIGS. 19-27, a method of operating the system400 is generally referred to by the reference numeral 600. In severalexemplary embodiments, the method 600 includes unloading filament fromthe repair system 400 at step 605; loading filament in the repair system400 at step 610; repairing a part using the system 400 at step 615;heating the part using the system 400 at step 620; cooling the partusing the system 400 at step 625; and resuming the repair at step 630.

At the step 605, the filament is unloaded from the repair system 400.Referring back to FIG. 21, the filament is generally stored on the spool77, with one end of the filament having been fed onto or over a filamentwheel 25 a that is coupled to a stepper motor 25 b, which is or forms aportion of the dispenser 25. The rotation direction of the filamentwheel 25 a determines whether the filament will be conveyed in a firstdirection that is away from the conduit 60 and away from the inlet 65 bof the tip 65, or in a second direction that is opposite the firstdirection and is through the conduit 60 and towards the inlet 65 b ofthe tip 65. The speed of rotation of the filament wheel 25 a determinesthe feed rate at which the filament will be conveyed to the inlet 65 bof the tip 65. When rotated in the second direction that is towards theinlet 65 b, the filament is pushed, by the dispenser 25, through theconduit 60, the interior passageway 472 a of the housing 472, and theinterior passageway 65 a of the extruder tip 65. When the exterior ofthe tip 65 is heated, the filament becomes a fluidic thermoplasticmaterial that then exits the tip outlet 65 c. Generally, after a repairis completed, the exterior of the tip 65 is cooled and any fluidicthermoplastic material that is accommodated in the passageway 65 a ofthe tip 65 is also cooled and transforms back into a solid thermoplasticmaterial. Thus, the solid thermoplastic material 70 and filament extendfrom within the passageway 65 a of the tip, through the passageway 472a, through the conduit 60, through or over the dispenser 25, and iswound around the spool 77. Often, the solid thermoplastic material 70and filament need to be removed or unloaded from the system 400 andreplaced with another type of filament. To unload the solidthermoplastic material 70 and filament from the system 400, the conduit60 is decoupled or detached from the housing 472 via the quickconnection 485, thereby exposing the filament that extends within thepassage 472 a. The portion of the thermoplastic filament that extendswithin the housing 472 can be severed from the remainder of the filamentthat extends within the conduit 60. An “unload” instruction can be inputinto the user interface 555 via the button 445 and/or the graphical userinterface 450. Referring now to the FIG. 29, the step 605 includesreceiving the “unload” instruction at step 635; identifying: apredetermined temperature (i.e., a first temperature or “not heated”), afilament feed rate and direction (i.e., first feed rate and in the firstdirection); and a gas valve position (i.e., closed position) that areassociated with the unload instruction at step 640; and controlling thesystem 400 using the identified predetermined temperature, theidentified predetermined filament feed rate and direction, and theidentified predetermined gas valve position associated with the unloadinstruction at step 645.

At the step 635, the “unload” instruction is received by the system 400.As noted above, the “unload’ instruction can be received at thecontroller 20 during or after the unload instruction is input via one ofthe buttons 445 and/or the graphical user interface 450. In someinstances, the unload instruction can also be received via a singledepression or a series of pedal depressions of the remote controller415.

At the step 640, the controller 20 identifies the predeterminedtemperature (i.e., a first temperature or “not heated”), the filamentfeed rate and direction (i.e., first feed rate and in the firstdirection), and the gas valve position (i.e., closed position) that areassociated with the unload instruction. In an exemplary embodiment, datarelating to the predetermined temperature, filament feed rate anddirection, and gas valve position associated with a variety ofinstructions is stored in the database 20 c of the controller 20.

At the step 645, the controller 20 controls the system 400 using theidentified predetermined temperature (i.e., a first temperature or “notheated”), the identified predetermined filament feed rate and direction(i.e., first feed rate and in the first direction), and the identifiedpredetermined gas valve position (i.e., closed position) that areassociated with the unload instruction. In an exemplary embodiment, thestep 645 includes the steps of operating the dispenser at the firstfilament feed rate and in the first direction at step 650; positioningor maintaining the gas valve in a closed position at step 655; anddeactivating or maintaining the heater 40 in a deactivated state at step660. At the step 650, the controller 20 operates the filament wheel 25 aof the dispenser 25 at the first filament feed rate in the firstdirection, or in the direction away from the inlet 65 b of the tip 65.That is, the filament wheel 25 a pulls the filament through the conduit60 in a direction away from the handheld device 410 to clear thefilament from the conduit 60. As the filament has been severed near thequick connection 485, the severed end is also capable of being pulledback towards the filament wheel 25 a and away from the inlet 65 b of thetip 65 and through the conduit 60. As the identified predetermined gasvalve position is the closed position, the controller 20 positions ormaintains the gas valve, or regulator 30, in a closed position such thatthe gas source 420 is fluidically isolated from the handheld device 410.Moreover, as the identified predetermined temperature is a firsttemperature that is an ambient temperature or “not heated”, the heater40 is deactivated or maintained in the deactivated state at step 660such that no significant amount of heat is transferred to the tip 65.During the step 605, the system 400 generally rewinds the filament ontothe spool 77.

After the filament has been unloaded in the step 605, another filamentcan be loaded into the system at step 610.

Referring back to FIG. 28, filament is loaded in the system 400 at thestep 610. In some embodiments, and referring to FIG. 30, the step 610includes receiving the “reload” instruction at step 661, identifying thepredetermined temperature (i.e., a second temperature), the filamentfeed rate and direction (i.e., second feed rate and in the seconddirection), and the gas valve position (i.e., open position) that areassociated with the load instruction at step 665; and controlling thesystem 400 using the identified, predetermined temperature; theidentified, predetermined filament feed rate and direction; and theidentified predetermined gas valve position that are associated with theunload instruction at step 670.

The step 661 of receiving the reload instruction is substantiallysimilar to the step 635 except that instead of receiving the “unload”instruction, the “reload” instruction is received. Thus, detailsrelating to the step 661 will not be repeated here.

The step 665 of identifying: the predetermined temperature (i.e., asecond temperature), the filament feed rate and direction (i.e., secondfeed rate and in the second direction), and the gas valve position(i.e., open position) that are associated with the load instruction issubstantially similar to the step 640 except that the predeterminedtemperature associated with the load instruction is the secondtemperature, the filament feed rate and direction is the second feedrate that is different from the first feed rate and the second directionthat is opposite from the first direction, and the gas valve position isan open position. Thus, details relating to step 665 will not berepeated here.

At the step 670, the controller 20 controls the system 400 using theidentified, predetermined temperature; the identified, predeterminedfilament feed rate and direction; and the identified, predetermined gasvalve position that are associated with the unload instruction. The step670 includes operating the dispenser 25 at the second filament rate inthe second direction at step 675, opening the gas valve or maintainingthe gas valve in an open position at step 680, and activating the heater40 to reach and/or maintain the second temperature at step 685.

At the step 675, the controller 20 rotates the filament wheel 25 a at aspeed that correlates to the second feed rate and in the seconddirection such that the filament is being pushed through the conduit 60towards the inlet 65 b of the tip 65.

At the step 680, the controller 20 opens the gas valve or maintains thegas valve in an open state to place the gas source 420 in fluidcommunication with the annuli 490 and 495 via the conduit 507, thepassageways 551 and 545, and the conduit 90. Generally, at the step 680,the controller 20 allows a nitrogen gas to enter the conduit 90, whichextends from the regulator 30 to the body 465 of the handheld device410. As the conduit 90 is fluidically coupled to the interior passagewayof 545 of the housing 530, the gas flows through the interior passageway545 and over or through the flow sensor 550, through the passageway 551and the conduit 507, and into the annuli 490 and 495. When the heater 40is activated, the gas is heated as it passes through the passageway 551or over the heater 40.

At the step 685, the controller 20 activates the heater 40 such that thegas reaches and/or maintains the second temperature. The step 685includes receiving data from the heat or temperature sensor 510 at step690, determining an actual temperature of the gas from the data receivedfrom the temperature sensor 510 at step 695, comparing the actualtemperature with the second temperature at step 700; controlling theheater 40 based on the comparison between the actual temperature of thegas and the second temperature at step 705, receiving data from the gasflow sensor 550 at step 710, identifying an actual gas flow rate basedon the received data from the gas flow sensor 550 at step 715, comparingthe actual gas flow rate with a predetermined minimum gas flow rate atstep 720, and deactivating the heater 40 if the actual gas flow rate isless than the predetermined minimum flow rate at step 725.

In one embodiment, the controller 20, the temperature sensor 510, andthe heater 40 form a temperature feedback control loop that uses apredetermined reference temperature, or the identified, predeterminedtemperature (e.g., the second temperature) as an input for the feedbackcontrol loop and the actual temperature as the feedback for the feedbackcontrol loop. The steps of 690, 695, 700, and 705 detail the activitiesof the feedback control loop when reaching or maintaining the secondtemperature. In some instances, requiring a predetermined minimum gasflow rate through the passageway 545 and/or across/through the heater 40prevents or at least discourages the overheating of the heater 40 and/orsurrounding elements. Thus, if an actual gas flow rate of the gas (assensed by the gas flow sensor 550 and determined by the controller 20)is less than the predetermined minimum gas flow rate, the heater 40 isdeactivated to prevent further heat generation. The steps 710, 715, 720,and 725 detail the activities of the controller 20 when determiningwhether the actual gas flow rate of the gas is less than thepredetermined minimum flow rate and the deactivation of the heater 40when it does fall below the predetermined minimum flow rate. During thestep 670, the filament loaded in the system 400 is conveyed into thepassageway 65 a of the tip 65, and as the passageway 65 a of the tip isheated by the heated gas, the filament is also heated to the secondtemperature such that the filament becomes a fluidic thermoplasticmaterial. Any previously used thermoplastic material that wasaccommodated within the passageway 65 a of the tip 65 is flushed out bynew fluidic thermoplastic material. The second feed rate may be higherthan a feed rate associated with a repair, as one purpose of the step610 is to quickly flush out the previously used thermoplastic materialand prepare the system 400 to begin a repair process using the recentlyloaded filament.

Referring back to FIG. 28, the system 400 is operated to perform arepair process at the step 615. In some instances and referring to FIGS.31A and 31B, the step 615 includes receiving “repair setting” inputs atstep 730; identifying a predetermined temperature, a predeterminedfilament feed rate and direction, and a predetermined gas valve positionusing the received “repair settings” inputs at step 735; controlling thesystem 400 using the identified, predetermined temperature, theidentified, predetermined filament feed rate and direction, and theidentified, predetermined gas valve position that are associated withthe received “repair setting” inputs at step 740.

The step 730 of receiving one or more “repair setting” inputs includesreceiving one or more of the following: an input indicating material(s)of which the solid thermoplastic material 70 is/are composed at step745, an input parameter indicating a shape of the tip outlet of thefirst extruder tip at step 750; and an input parameter indicating a typeof repair to be performed by the repair system 400 at step 755. Themethod of receiving each of the inputs in the steps 745, 750, and 755 issubstantially similar to the step 635 except that instead of receivingthe “unload” instruction as in the step 635, an input indicatingmaterial(s) of which the solid thermoplastic material is/are composed,such as polyethylene (“PE”), polypropylene (“PP”) and the like, isreceived at step 745, an input parameter indicating a shape of the tipoutlet of the tip 65, such as a ribbon tip, a wide ribbon tip, a drawtip, and the like, is received at step 750, and an input parameterindicating a type of repair to be performed by the repair system 400,such as a melt, a draw, and the like, is received at step 755. Thus,details relating to the steps 745, 750, and 755 will not be repeatedhere. In an exemplary embodiment, the input parameter indicatingmaterials(s) of which the solid thermoplastic material is/are composedincludes an input parameter indicating the specific type of filamentused. For example, the input received during the step 745 may identify atype of plastic forming the filament and the cross-sectional shape orcross-sectional area of the filament. In an exemplary embodiment, thetype of repair identified as a “melt” repair requires a higher feed rateof the filament and a higher predetermined temperature such that a largeamount of molten fluidic thermoplastic material is dispensed from thetip outlet 65 c. In an exemplary embodiment, the type of repairidentified a “draw” repair requires a lower feed rate of the filamentthan the “melt” repair and a lower predetermined temperature than the“melt” repair such that a small of fluidic material is dispensed fromthe tip outlet 65 c at a temperature slightly above to the meltingtemperature. In some embodiments, the “melt” type of repair isassociated with a level 2 or level 3 repair and a “draw” type of repairis associated with a level 1 repair.

The step 735 of identifying the predetermined temperature, thepredetermined filament feed rate and direction, and the predeterminedgas valve position associated with the received “repair setting” inputsis substantially similar to the step 640 except that the controller 20identifies the predetermined temperature, the predetermined filamentfeed rate and direction, and the predetermined gas valve position thatare associated with the received “repair settings” instead of thereceived “unload” instruction. In an exemplary embodiment, data relatingto the predetermined temperature; predetermined filament feed rate anddirection; and the predetermined gas valve position associated with thereceived “repair settings” is stored in the database 20 c of thecontroller 20. As illustrated in FIG. 32, a look-up table 797 or thelike may be stored in the database 20 c of the controller 20. Thelook-up table 797 includes a plurality of outputs 797 a, with eachoutput including a gas valve position, a temperature, and a filamentfeed rate in mm/sec. Each of the outputs 797 a is predetermined andassociated with a combination of the following: the input for type ofrepair 797 b; the input for type of thermoplastic material 797 c; andthe input for the type of tip 797 d. Generally, the input for type ofrepair 797 b is received at the step 755, the input for the type ofthermoplastic material 797 c is received at the step 745, and the inputfor the type of tip 797 d is received at the step 750. While thefilament feed rate of the output 797 a in FIG. 32 is represented asmm/sec, which is a length of the filament conveyed over a period oftime, the feed rate may also be represented as a rotation of thefilament wheel 25 a over a period of time or unit of volume over time.Moreover, while the temperature output depicted in FIG. 32 is shown as asingle temperature, the temperature output may also include atemperature range. Thus, the first temperature, the second temperature,and the predetermined temperatures include a range of temperatures, insome embodiments.

Referring back to FIGS. 31A-31B, the controller 20 controls the system400 using the identified, predetermined temperature; the identified,predetermined filament feed rate and direction; and identified,predetermined gas valve position associated with the received “repairsetting” inputs at step 740. The step 740 includes positioning ormaintaining the gas valve in the identified, predetermined gas valveposition at step 760; activating the heater 40 to reach and/or maintainthe identified, predetermined temperature at step 765; and operating thedispenser 25 to convey the filament at the identified, predeterminedfeed rate and direction upon one or both of: the controller 20determining if the actual temperature exceeds a minimum operatingtemperature and receipt of a “start” instruction” from the remotecontroller 415, at step 770.

At step 760, the controller 20 positions or maintains the gas valve inthe identified, predetermined gas valve position, which is the openposition. As the step 760 is substantially similar to the step 680,additional details regarding the step 760 will not be provided here.

At the step 765, the controller 20 activates the heater 40 such that thegas reaches and/or is maintained at the identified, predeterminedtemperature. The step 765 includes the step 690, the step 695, comparingthe actual temperature with the identified, predetermined temperature atstep 775; controlling the heater 40 based on the comparison between theactual temperature of the gas and the identified, predeterminedtemperature at step 780, and the steps 710, 715, 720, and 725.Generally, the step 765 is substantially similar to the step 685 exceptthat the temperature of the gas that is being reached and/or maintainsis the identified, predetermined temperature identified in the step 735instead of the second temperature identified in the step 665. As thesteps 775 and 780 are substantially similar to the steps 700 and 705except for the differences noted above, additional details regarding thesteps 775 and 780 will not be provided here.

During the step 770, the controller 20 operates the dispenser 25 at theidentified, predetermined filament speed and the direction upon one orboth of: the controller 20 determining that the actual temperature hasexceeded a minimum operating temperature at step 785; and receipt of a“start” instruction from the remote controller 415 at the step 790.Generally, the extruder tip 65 is heated to a minimum operatingtemperature prior to the filament being conveyed into the inlet 65 b atthe identified, predetermined feed rate. Thus, the controller 20monitors the actual temperature of the heated gas to determine if theactual temperature is equal to or exceeds the minimum operatingtemperature. In some instances, the controller 20 operates the filamentwheel 25 a to convey the filament at the identified, predeterminedfilament speed rate and direction upon or after the gas reaches orexceeds the minimum operating temperature. In other instances, theminimum operating temperature must be exceeded, and a “start”instruction from the remote controller 415 must be received by thecontroller 20. Determining whether the actual temperature is equal to orexceeds the minimum operating temperature at step 785 includes the steps690 and 695 and comparing the actual temperature with the minimumoperating temperature at step 795. At the step 790, the “start”instruction from the remote controller 415 may include a depression or aseries of depressions of the pedal. In some embodiments, the minimumoperating temperature is the identified, predetermined temperature.

During the step 740, and as illustrated in FIGS. 33-35, the fluidicthermoplastic material exits, or is dispensed from, the tip outlet 65 cof the tip 65. Moreover, the heated gas that heats the extruder tip 65extends in a skirt-shaped gas curtain 800 from the annulus 495 andtowards the tip outlet 65 c of the tip 65. The skirt-shaped gas curtain800 is a hollow cylindrical shape, a ring shape, or any shape having across-section that corresponds to the annulus 495 and a length. In someembodiments, the skirt-shaped gas curtain 800 surrounds the entirecircumference of the tip 65 while in other embodiments, the skirt-shapedgas curtain 800 only surrounds a portion of the circumference of the tip65. In some embodiments, the skirt-shaped gas curtain 800 protects thethermoplastic material 70 that is exiting or being dispensed from thetip outlet 65 c from debris. The system 400 can be operated to attach afirst part 805 to a second part 810 by riveting the first part 805 tothe second part 810. Specifically, when the extruder tip 65 is heatedand the heated gas is exiting the annulus 495 to form the skirt-shapedgas curtain 800, the heated skirt-shaped gas curtain 800 contacts afirst surface 805 a of the first part 805 to heat a portion of the firstpart 805. The heated extruder tip 65 may also then contact the firstsurface 805 a of the part 805. When the first part 805 is composed of athermoplastic material, the heated extruder tip 65 and the heatedskirt-shaped gas curtain 800 melt or transform the previously hardenedthermoplastic material of the part 805 to a fluidic or at least softerstate. When pressure is applied to the tip 65 in a first directiontowards the part 805, the tip 65 punctures or is inserted through athickness 805 b of the first part that is defined between the firstsurface 805 a and an opposing a second surface 805 c of the part 805 toform a passage 815 through the part 805. The tip 65 continues to extendin the first direction, while the tip 65 is accommodated in the passage815 of the part 805, through an opening 810 a of the part 810. However,if no opening 810 a exists in the part 810, then the tip 65 can heat andpuncture the part 810 in a similar manner to the part 805. Regardless,the tip 65 continues to extend towards and through the part 805 untilthe first surface 805 a contacts the shoulder 505 formed in the part bythe end surface 85 b of the nozzle 85, such that the shoulder 505 stopsthe forward movement of the extruder tip 65 in the first directionrelative to the part 805. After a portion of the tip 65 extends throughthe parts 805 and 810, the dispenser 25 activates the filament wheel 25a such that the fluidic thermoplastic material 70 begins to exit the tipoutlet 65 c. However, in some embodiments, the filament wheel 25 a ofthe dispenser is conveying the thermoplastic material 70 at a rate suchthat fluidic thermoplastic material 70 exits the opening of the tipoutlet 65 c prior to and during the puncturing of the parts 805 and 810.Regardless, the tip 65 is then moved in a second direction that isopposite the first direction to remove the tip 65 from the parts 805 and810 while fluidic thermoplastic material 70 exits the tip outlet 65 c.As illustrated in FIGS. 34-35, this results in the fluidic thermoplasticmaterial 70 being accommodated in the passage 815 of the part 805 andthe opening 810 a of the part 810. The fluidic thermoplastic material 70applied to the parts 805 and 810 form a connector 820. In someembodiments, the connector 820 has a head portion 820 a that extendsbeyond the opening 810 a and the passage 815 and that is integral with abody portion 820 b, which extends within one of the opening 810 a andthe passage 815. The solidification of this fluidic thermoplasticmaterial, or the connector 820, rivets the part 805 to the part 810. Thecooling of the connector 820 solidifies the fluidic thermoplasticmaterial to form a rivet-like coupling of the part 805 to the part 810.In some embodiments, the part 810 is the connector tab 225 and theopening 810 a is one of the holes 255 or the part 810 is the attachmentpart 270 and the opening 810 a is one of the holes 285.

Referring back to FIGS. 28 and 36, the step 620 includes heating a partusing the repair system 400. The step 620 includes receiving a “heat”instruction at step 825, and controlling the system 400 based on thereceived “heat” instruction at step 830.

The step 825 of receiving the heat instruction is substantially similarto the step 635 except that instead of receiving the “unload”instruction, the “heat” instruction is received. Thus, details relatingto the step 825 will not be repeated here.

The step 830 of the controller 20 controlling the system 400 based onthe heat instruction includes maintaining or reestablishing the mostrecently identified, predetermined temperature at step 835, the step680, and deactivating or maintain the filament wheel 25 a such that nofilament is conveyed towards the tip 65 at step 840.

The step of reaching and/or maintaining the most recently identified,predetermined temperature at step 835 is substantially similar to thestep 765 except that instead of the identified, predeterminedtemperature being used in the step 765, the most recently identified,predetermined temperature is reached and/or maintained at the step 835.That is, the controller 20 determines the most recently identified,predetermined temperature, which is then used as the input for thefeedback control loop. The step 835 includes the steps 690, 695, 710,715, 720, and 725; comparing the actual temperature with the mostrecently identified, predetermined second temperature at step 845; andcontrolling the heater 40 based on the comparison between the actualtemperature of the gas and the most recently identified, predeterminedsecond temperature at step 850. As the steps 845 and 850 aresubstantially similar to the steps 775 and 780 except for thedifferences noted above, additional details regarding the steps 845 and850 will not be provided here.

At the step 840, the filament wheel 25 a is operated at a speed androtation such that no or very little filament is conveyed to the inlet65 b of the tip 65. The speed may be zero mm/s or a negligible speed.

During the step 620, the skirt-shaped gas curtain 800 is heated andextends from the annulus 495 in the direction towards the tip outlet 65c. The heated skirt-shaped gas curtain 800 heats the part 810 and/orprotects a portion of the part 810 from debris, such as airborne debris.The protected portion of the part 810 corresponds to at least across-sectional area of the skirt-shaped gas curtain 800.

Referring back to FIGS. 28 and 37, the step 625 includes cooling a partusing the repair system 400. The step 620 includes receiving a “cool”instruction at step 855, and controlling the system 400 based on thereceived “cool” instruction at step 860.

The step 855 of receiving the cool instruction is substantially similarto the step 635 except that instead of receiving the “unload”instruction, the “cool” instruction is received. Thus, details relatingto the step 855 will not be repeated here.

The step 860 of the controller 20 controlling the system 400 based onthe cool instruction includes the steps 660, 680, and 840. Detailsrelating to these steps will not be repeated here. In one embodiment,the steps 660, 680, and 840 occur simultaneously such that theskirt-shaped curtain of gas is unheated. In some embodiments, coolingthe first part 805 and the connector 820 using the unheated skirt-shapedcurtain of gas protects the parts 805, 810, and the connector 820 fromairborne or non-airborne debris.

Referring back to FIGS. 28 and to FIG. 38, the step 630 includesresuming a repair using the repair system 400. The step 630 includesreceiving a “resume repair” instruction at step 865, and controlling thesystem 400 based on the received “resume repair” instruction at step870.

The step 865 of receiving the “resume repair” instruction issubstantially similar to the step 635 except that instead of receivingthe “unload” instruction, the “resume repair” instruction is received.Thus, details relating to the step 865 will not be repeated here.

The step 870 of the controller 20 controlling the system 400 based onthe resume repair instruction includes the steps 835 and 680, andoperating the dispenser 25 at the most recently identified,predetermined filament speed and direction at step 875. Details relatingto the steps 835 and 680 will not be repeated here. The step 875 ofoperating the dispenser 25 at the most recently identified,predetermined filament speed and direction is substantially similar tothe step 770 except that instead of operating the dispenser at theidentified, predetermined filament speed rate and direction that wasidentified at the step 735, the controller 20 determines the mostrecently identified, predetermined filament speed and direction and thenoperates the dispenser 25 using the most recently identifiedpredetermined filament speed and direction.

The system 400 can be used in the method 100 and can be used similarlyto the system 10. The system 400 may be altered in a variety of ways. Insome embodiments, the gas flow is increased as the feed rate increaseswhile the controller 20 maintains a predetermined temperature. In anexemplary embodiment, the system 400 also includes a second dispenseroperably coupled to each of the spool 77 and the controller 20 such thatwhen the controller 20 conveys the filament in the first direction, thecontroller 20 also controls the second dispenser to rotate in a similardirection to “rewind” the filament onto the spool 77. Moreover and insome embodiments, during the step 650, the dispenser 25 is not operated.Instead, the second dispenser is operated to rotate the spool 77 therebyconveying the filament at the first filament feed rate in the firstdirection. In other embodiments, the system 400 also includes a secondtemperature sensor that senses or monitors a temperature of the tip 65.In other exemplary embodiments, the system 400 has Wi-Fi capability andtransmits data relating to the use of the system 400 to a remotecomputer system over a network, such as the internet. In someembodiments, the regulator 30 is a gated solenoid that controls thepressure and flow of the gas from the gas source 420. In an exemplaryembodiment, the thermoplastic material 70 is the filament while in asolid state and is a fluidic thermoplastic material once heated to orabove a melt temperature or melting point. In some embodiments, a repairthat is needed is a repair that is recommended or otherwise selected bya user or an automotive specialist.

Use of the system 400 and/or the method 600 allows for a consistentapplication of the fluidic thermoplastic material 70 to the part, suchas the part 75, 805, or 810. Use of the system 400 and/or the method 600avoids a trial-and-error approach by the user or an automotivespecialist to heat the thermoplastic material 70 to the predeterminedtemperature and maintain that temperature as necessary during the repairof the part, such as the part 75, 805, or 810. Through use of the remotecontroller 415, the automotive specialist can easily stop, start, orotherwise control the flow of fluidic thermoplastic material 70dispensed from the extruder tip 65. The skirt-shaped curtain of gas 800prevents or at least discourages exposing the fluidic thermoplasticmaterial 70 and/or the parts being repaired to oxygen or otherimpurities. Reducing or avoiding the exposure of the fluidicthermoplastic material 70 to the oxygen or other impurities strengths abond formed between the fluidic thermoplastic material 70 and the partsbeing repaired.

In one or more exemplary embodiments, as illustrated in FIG. 39 withcontinuing reference to FIGS. 1, 2, 3A, 3B, 4-30, 31A, 31B, and 32-38,an illustrative computing device 1000 for implementing one or moreembodiments of one or more of the above-described networks, elements,methods and/or steps, and/or any combination thereof, is depicted. Thecomputing device 1000 includes a microprocessor 1000 a, an input device1000 b, a storage device 1000 c, a video controller 1000 d, a systemmemory 1000 e, a display 1000 f, and a communication device 1000 g allinterconnected by one or more buses 1000 h. In several exemplaryembodiments, the storage device 1000 c may include a floppy drive, harddrive, CD-ROM, optical drive, any other form of storage device and/orany combination thereof. In several exemplary embodiments, the storagedevice 1000 c may include, and/or be capable of receiving, a floppydisk, CD-ROM, DVD-ROM, or any other form of computer-readable mediumthat may contain executable instructions. In several exemplaryembodiments, the communication device 1000 g may include a modem,network card, or any other device to enable the computing device tocommunicate with other computing devices. In several exemplaryembodiments, any computing device represents a plurality ofinterconnected (whether by intranet or Internet) computer systems,including without limitation, personal computers, mainframes, PDAs,smartphones and cell phones.

In several exemplary embodiments, the one or more computers 305, theprinter 310, and/or one or more components thereof, are, or at leastinclude, the computing device 1000 and/or components thereof, and/or oneor more computing devices that are substantially similar to thecomputing device 1000 and/or components thereof. In several exemplaryembodiments, one or more of the above-described components of one ormore of the computing device 1000, one or more computers 305, and theprinter 310 and/or one or more components thereof, include respectivepluralities of same components.

In several exemplary embodiments, a computer system typically includesat least hardware capable of executing machine readable instructions, aswell as the software for executing acts (typically machine-readableinstructions) that produce a desired result. In several exemplaryembodiments, a computer system may include hybrids of hardware andsoftware, as well as computer sub-systems.

In several exemplary embodiments, hardware generally includes at leastprocessor-capable platforms, such as client-machines (also known aspersonal computers or servers), and hand-held processing devices (suchas smart phones, tablet computers, personal digital assistants (PDAs),or personal computing devices (PCDs), for example). In several exemplaryembodiments, hardware may include any physical device that is capable ofstoring machine-readable instructions, such as memory or other datastorage devices. In several exemplary embodiments, other forms ofhardware include hardware sub-systems, including transfer devices suchas modems, modem cards, ports, and port cards, for example.

In several exemplary embodiments, software includes any machine codestored in any memory medium, such as RAM or ROM, and machine code storedon other devices (such as floppy disks, flash memory, or a CD ROM, forexample). In several exemplary embodiments, software may include sourceor object code. In several exemplary embodiments, software encompassesany set of instructions capable of being executed on a computing devicesuch as, for example, on a client machine or server.

In several exemplary embodiments, combinations of software and hardwarecould also be used for providing enhanced functionality and performancefor certain embodiments of the present disclosure. In an exemplaryembodiment, software functions may be directly manufactured into asilicon chip. Accordingly, it should be understood that combinations ofhardware and software are also included within the definition of acomputer system and are thus envisioned by the present disclosure aspossible equivalent structures and equivalent methods.

In several exemplary embodiments, computer readable mediums include, forexample, passive data storage, such as a random access memory (RAM) aswell as semi-permanent data storage such as a compact disk read onlymemory (CD-ROM). One or more exemplary embodiments of the presentdisclosure may be embodied in the RAM of a computer to transform astandard computer into a new specific computing machine. In severalexemplary embodiments, data structures are defined organizations of datathat may enable an embodiment of the present disclosure. In an exemplaryembodiment, a data structure may provide an organization of data, or anorganization of executable code.

In several exemplary embodiments, any networks and/or one or moreportions thereof may be designed to work on any specific architecture.In an exemplary embodiment, one or more portions of any networks may beexecuted on a single computer, local area networks, client-servernetworks, wide area networks, internets, hand-held and other portableand wireless devices and networks.

In several exemplary embodiments, a database may be any standard orproprietary database software. In several exemplary embodiments, thedatabase may have fields, records, data, and other database elementsthat may be associated through database specific software. In severalexemplary embodiments, data may be mapped. In several exemplaryembodiments, mapping is the process of associating one data entry withanother data entry. In an exemplary embodiment, the data contained inthe location of a character file can be mapped to a field in a secondtable. In several exemplary embodiments, the physical location of thedatabase is not limiting, and the database may be distributed. In anexemplary embodiment, the database may exist remotely from the server,and run on a separate platform. In an exemplary embodiment, the databasemay be accessible across the Internet. In several exemplary embodiments,more than one database may be implemented.

In several exemplary embodiments, a plurality of instructions stored ona non-transitory computer readable medium may be executed by one or moreprocessors to cause the one or more processors to carry out or implementin whole or in part the above-described operation of each of theabove-described exemplary embodiments of the systems 10 and 400, themethods 100 and 600, and/or any combination thereof. In severalexemplary embodiments, such a processor may include the microprocessor1000 a, one or more components of the controller 20, the controller 45,the processor 20 a, and/or any combination thereof, and such anon-transitory computer readable medium may include the storage device1000 c, the system memory 1000 e, one or more components of thecontroller 45, one or more components of the controller 20 such as, forexample, the computer readable medium 20 b, and/or may be distributedamong one or more components of the system 10. In several exemplaryembodiments, such a processor may execute the plurality of instructionsin connection with a virtual computer system. In several exemplaryembodiments, such a plurality of instructions may communicate directlywith the one or more processors, and/or may interact with one or moreoperating systems, middleware, firmware, other applications, and/or anycombination thereof, to cause the one or more processors to execute theinstructions.

A repair system has been described that includes a handheld deviceincluding: a first extruder tip having an interior passageway extendingbetween an inlet and a tip outlet, wherein the inlet is configured toreceive a solid thermoplastic material and the tip outlet is configuredto dispense a fluidic thermoplastic material; a nozzle surrounding thefirst extruder tip to form an annulus between an interior surface of thenozzle and an exterior surface of the first extruder tip; and a heaterthat is configured to heat the interior passageway of the first extrudertip such that the solid thermoplastic material becomes the fluidicthermoplastic material. In an exemplary embodiment, the nozzle is atubular forming a passageway and has an end surface; wherein at least aportion of the first extruder tip extends within the passageway of thenozzle and another portion of the first extruder tip extends beyond theend surface of the nozzle such that the tip outlet is spaced from theend surface of the nozzle; wherein the exterior surface of the firstextruder tip and the end surface of the nozzle define a shoulder; andwherein the end surface of the nozzle is radially spaced from theexterior surface of the first extruder tip by the annulus. In anexemplary embodiment, the system further includes a gas source in fluidcommunication with the annulus such that a skirt-shaped curtain of gasextends from the annulus and in a direction towards the tip outlet ofthe first extruder tip. In an exemplary embodiment, the skirt-shapedcurtain of gas surrounds the fluidic thermoplastic material as it isdispensed from the tip outlet of the first extruder tip to protect thefluidic thermoplastic material from debris. In an exemplary embodiment,the heater is configured to heat a gas to heat the interior passagewayof the first extruder tip; wherein the repair system further includes: acontroller that is in communication with the heater and that isconfigured to identify a predetermined reference temperature; and atemperature sensor that is in communication with the controller and thatis configured to sense an actual temperature of the heated gas; andwherein the controller, the temperature sensor, and the heater form atemperature feedback control loop that uses the predetermined referencetemperature as an input for the feedback control loop and the actualtemperature as a feedback for the feedback control loop. In an exemplaryembodiment, the system further includes a dispenser that is incommunication with the controller and that is configured to convey thesolid thermoplastic material to the inlet of the first extruder tip at apredetermined feed rate; wherein the controller includes: a processor;and a computer readable medium operably coupled to the processor, thecomputer readable medium including a plurality of instructions storedtherein and executable by at least the processor, the plurality ofinstructions including: instructions for receiving one or more inputparameters; instructions for selecting the predetermined referencetemperature to which the solid thermoplastic material is heated based onthe one or more input parameters; instructions for selecting thepredetermined feed rate at which the solid thermoplastic material is tobe conveyed to the inlet of the first extruder tip based on the one ormore input parameters; instructions for activating the heater to heatthe solid thermoplastic material to the predetermined referencetemperature; and instructions for activating the dispenser to convey thesolid thermoplastic material to the inlet of the first extruder tip atthe predetermined feed rate. In an exemplary embodiment, the one or moreinput parameters includes a first input parameter indicating material(s)of which the solid thermoplastic material is/are composed. In anexemplary embodiment, the one or more input parameters includes a secondinput parameter indicating a shape of the tip outlet of the firstextruder tip. In an exemplary embodiment, the one or more inputparameters includes a third input parameter indicating a type of repairto be performed by the repair system. In an exemplary embodiment, thehandheld device includes a housing to which the first extruder tip isdetachably coupled; wherein the repair system further includes a secondextruder tip configured to be detachably coupled to the housing of thehandheld device; and wherein the second extruder tip is different fromthe first from the first extruder tip.

A method of repairing a first automotive part has been described andincludes providing a connector tab; and attaching the connector tab tothe first automotive part, including applying a fluidic thermoplasticmaterial to the connector tab and/or the first automotive part; whereinthe connector tab includes: a retainer portion sized to attach to thefirst automotive part, wherein the retainer portion has a plurality ofholes formed therethrough, and wherein the plurality of holes isconfigured to receive the fluidic thermoplastic material to secure theretainer portion to the first automotive part; and a coupler portiondefining a shape corresponding to a portion of the first automotivepart, wherein the coupler portion forms a coupler, which is configuredto operably engage another coupler of a second automotive part. In anexemplary embodiment, at least a portion of the connector tab ismanufactured by using an additive manufacturing process. In an exemplaryembodiment, a shoulder is formed within a body of the connector tab atan intersection of the retainer portion and the coupler portion. In anexemplary embodiment, the method also includes engaging the shoulder ofthe connector tab with a corresponding edge of the first automotive partto position the connector tab relative to the first automotive part. Inan exemplary embodiment, the coupler portion has a hole formedtherethrough and the hole is the coupler. In an exemplary embodiment,the method also includes printing the connector tab. In an exemplaryembodiment, the method also includes allowing the fluidic thermoplasticmaterial that is applied to the connector tab and/or the firstautomotive part to cool and thereby transform the first automotive partto a repaired first automotive part; and coupling the coupler of therepaired first automotive part to the another coupler of the secondautomotive part. In an exemplary embodiment, the fluidic thermoplasticmaterial is applied using an automotive repair system; and theautomotive repair system includes: a handheld device including: aconduit configured to convey a solid thermoplastic material; a heaterconfigured to apply heat to the solid thermoplastic material such thatthe solid thermoplastic material becomes the fluidic thermoplasticmaterial; and an extruder tip fluidically coupled to the conduit andconfigured to apply the fluidic thermoplastic material to the firstautomotive part; a controller in communication with the heater; and adispenser configured to control a feed rate at which the solidthermoplastic material is conveyed to the extruder tip, wherein thedispenser is in communication with the controller.

A connector tab for repair of a first automotive part has been describedand includes a retainer portion sized to attach to the first automotivepart, wherein the retainer portion has a plurality of holes formedtherethrough, and wherein the plurality of holes is configured toreceive a thermoplastic material to secure the retainer portion to thefirst automotive part; and a coupler portion defining a shapecorresponding to a portion of the first automotive part, wherein thecoupler portion forms a coupler, which is configured to operably engageanother coupler of a second automotive part. In an exemplary embodiment,at least a portion of the connector tab is manufactured by using anadditive manufacturing process. In an exemplary embodiment, a shoulderis formed within a body of the connector tab at an intersection of theretainer portion and the coupler portion. In an exemplary embodiment,the coupler portion has a hole formed therethrough and the hole is thecoupler.

A method of repairing a first automotive part has been described andincludes determining that one of a first level of repair, a second levelof repair, and a third level of repair is needed to repair the firstautomotive part; if the first level of repair is needed, then:controlling an automotive repair system based on a first set of inputparameters; and applying a fluidic thermoplastic material to the firstautomotive part, wherein the fluidic thermoplastic material is appliedusing the automotive repair system as controlled based on the first setof input parameters; if the second level of repair is needed, then:controlling the automotive repair system based on a second set of inputparameters; and applying the fluidic thermoplastic material to aconnector tab and the first automotive part to attach the connector tabto the first automotive part, wherein the fluidic thermoplastic materialis applied using the automotive repair system as controlled based on thesecond set of input parameters; and if the third level of repair isneeded, then: identifying a restorable portion of the first automotivepart; creating an attachment part that includes the restorable portionof the first automotive part and a first retainer portion; controllingthe automotive repair system based on a third set of input parameters;and applying the fluidic thermoplastic material to the first retainerportion and the first automotive part to attach the restorable portionto the first automotive part, wherein the fluidic thermoplastic materialis applied using the automotive repair system as controlled based on thethird set of input parameters. In an exemplary embodiment, each of thefirst set of input parameters, the second set of input parameters, andthe third set of input parameters includes: a first input parameterindicating material(s) of which the fluidic thermoplastic material iscomposed; and a second input parameter indicating that one of the firstlevel of repair, the second level of repair, and the third level ofrepair is needed to repair the first automotive part. In an exemplaryembodiment, creating the attachment part that includes the restorableportion of the first automotive part and the first retainer portionincludes printing the attachment part. In an exemplary embodiment,creating the attachment part that includes the restorable portion of thefirst automotive part and the first retainer portion includes:accessing, using a computer system, an electronic model of the firstautomotive part; identifying the restorable portion of the electronicmodel of the first automotive part; determining that the restorableportion of the electronic model of the first automotive part satisfiesone or more business rules; isolating, using the computer system, therestorable portion of the electronic model for printing; adding, usingthe computer system, a first retainer portion model to the restorableportion of the electronic model thereby creating a model of theattachment part; and printing the attachment part based on the model ofthe attachment part. In an exemplary embodiment, the automotive repairsystem includes: a handheld device including: a conduit configured toconvey a solid thermoplastic material; a heater configured to apply heatto the solid thermoplastic material such that the solid thermoplasticmaterial becomes the fluidic thermoplastic material; and an extruder tipfluidically coupled to the conduit and configured to apply the fluidicthermoplastic material to the first automotive part; a controller incommunication with the heater; and a dispenser configured to control afeed rate at which the solid thermoplastic material is conveyed to theextruder tip, wherein the dispenser is in communication with thecontroller. In an exemplary embodiment, the first set of inputparameters includes: a first input parameter indicating the solidthermoplastic material is either one of a polypropylene material and apolyethylene material; and a second input parameter indicating that thefirst level of repair is needed; wherein controlling the automotiverepair system based on the first set of input parameters includes:conveying the solid fluidic thermoplastic material through the conduitand to extruder tip; heating the solid thermoplastic material until thesolid thermoplastic material becomes the fluidic thermoplastic material;and applying the fluidic thermoplastic material to the first automotivepart such that the fluidic thermoplastic material cools to become ahardened material, wherein the hardened material replaces a missingportion of the first automotive part. In an exemplary embodiment, theconnector tab includes: a second retainer portion sized to attach to thefirst automotive part, wherein the second retainer portion has aplurality of holes formed therethrough, and wherein the plurality ofholes is configured to receive the fluidic thermoplastic material tosecure the second retainer portion to the first automotive part; and acoupler portion defining a shape corresponding to a portion of the firstautomotive part, wherein the coupler portion forms a coupler, which isconfigured to operably engage another coupler of a second automotivepart. In an exemplary embodiment, at least a portion of the connectortab is manufactured by using an additive manufacturing process. In anexemplary embodiment, a shoulder is formed within a body of theconnector tab at an intersection of the second retainer portion and thecoupler portion. In an exemplary embodiment, the method also includesengaging the shoulder of the connector tab with a corresponding edge ofthe first automotive part to position the connector tab relative to thefirst automotive part.

A method of printing an attachment part customized for a damagedautomotive part has been described and includes accessing, using acomputer system, an electronic model of the damaged automotive part;identifying a restorable portion of the electronic model of the damagedautomotive part; isolating, using the computer system, the restorableportion of the electronic model for printing; adding, using the computersystem, a retainer portion model to the restorable portion of theelectronic model thereby creating a model of the attachment partcustomized for the damaged automotive part; and printing the attachmentpart based on the model of the attachment part, the printed attachmentpart including a printed restorable portion and a printed retainerportion connected thereto. In an exemplary embodiment, the printedretainer portion of the printed attachment part is sized to attach tothe damaged automotive part, wherein the printed retainer portion of theprinted attachment part has a plurality of holes formed therethrough,and wherein the plurality of holes is configured to receive a fluidicthermoplastic material to secure the printed retainer portion to thedamaged automotive part. In an exemplary embodiment, the method alsoincludes determining whether the restorable portion of the electronicmodel of the damaged automotive part satisfies one or more businessrules.

A repair system has been described that includes a handheld deviceincluding: a first extruder tip having an interior passageway extendingbetween an inlet and a tip outlet, wherein the inlet is configured toreceive a solid thermoplastic material and the tip outlet is configuredto dispense a fluidic thermoplastic material; a nozzle surrounding thefirst extruder tip to form an annulus between an interior surface of thenozzle and an exterior surface of the first extruder tip; and a heaterthat is configured to heat the interior passageway of the first extrudertip such that the solid thermoplastic material becomes the fluidicthermoplastic material. In an exemplary embodiment, the nozzle is atubular forming a passageway and has an end surface; wherein at least aportion of the first extruder tip extends within the passageway of thenozzle and another portion of the first extruder tip extends beyond theend surface of the nozzle such that the tip outlet is spaced from theend surface of the nozzle; wherein the exterior surface of the firstextruder tip and the end surface of the nozzle define a shoulder; andwherein the end surface of the nozzle is radially spaced from theexterior surface of the first extruder tip by the annulus. In anexemplary embodiment, the system further includes a gas source in fluidcommunication with the annulus such that a skirt-shaped curtain of gasextends from the annulus and in a direction towards the tip outlet ofthe first extruder tip. In an exemplary embodiment, the skirt-shapedcurtain of gas surrounds the fluidic thermoplastic material as it isdispensed from the tip outlet of the first extruder tip to protect thefluidic thermoplastic material from debris. In an exemplary embodiment,the heater is configured to heat a gas to heat the interior passagewayof the first extruder tip; wherein the repair system further includes: acontroller that is in communication with the heater and that isconfigured to identify a predetermined reference temperature; and atemperature sensor that is in communication with the controller and thatis configured to sense an actual temperature of the heated gas; andwherein the controller, the temperature sensor, and the heater form atemperature feedback control loop that uses the predetermined referencetemperature as an input for the feedback control loop and the actualtemperature as a feedback for the feedback control loop. In an exemplaryembodiment, the system further includes a dispenser that is incommunication with the controller and that is configured to convey thesolid thermoplastic material to the inlet of the first extruder tip at apredetermined feed rate; wherein the controller includes: a processor;and a computer readable medium operably coupled to the processor, thecomputer readable medium including a plurality of instructions storedtherein and executable by at least the processor, the plurality ofinstructions including: instructions for receiving one or more inputparameters; instructions for selecting the predetermined referencetemperature to which the solid thermoplastic material is heated based onthe one or more input parameters; instructions for selecting thepredetermined feed rate at which the solid thermoplastic material is tobe conveyed to the inlet of the first extruder tip based on the one ormore input parameters; instructions for activating the heater to heatthe solid thermoplastic material to the predetermined referencetemperature; and instructions for activating the dispenser to convey thesolid thermoplastic material to the inlet of the first extruder tip atthe predetermined feed rate. In an exemplary embodiment, the one or moreinput parameters includes a first input parameter indicating material(s)of which the solid thermoplastic material is/are composed. In anexemplary embodiment, the one or more input parameters includes a secondinput parameter indicating a shape of the tip outlet of the firstextruder tip. In an exemplary embodiment, the one or more inputparameters includes a third input parameter indicating a type of repairto be performed by the repair system. In an exemplary embodiment, thehandheld device includes a housing to which the first extruder tip isdetachably coupled; wherein the repair system further includes a secondextruder tip configured to be detachably coupled to the housing of thehandheld device; and wherein the second extruder tip is different fromthe first from the first extruder tip.

A repair apparatus has been described that includes a non-transitorycomputer readable medium; and a plurality of instructions stored on thenon-transitory computer readable medium and executable by one or moreprocessors, the plurality of instructions including: instructions thatcause the one or more processors to receive one or more repair settinginputs; wherein the one or more repair setting inputs includes one ormore of the following: a first repair setting indicating material(s) ofwhich a thermoplastic material is/are composed; a second repair settingindicating a shape of a tip outlet of a extruder tip of a handhelddevice; and a third repair setting indicating a type of repair to beperformed using the handheld device; instructions that cause the one ormore processors, during or after receiving the one or more repairsetting inputs, to: identify a predetermined temperature to which thethermoplastic material is heated based on the one or more repair settinginputs; identify a first predetermined feed rate at which thethermoplastic material is to be conveyed in a first direction that istowards the extruder tip of the handheld device, wherein the extrudertip is configured to apply the thermoplastic material to a part, andwherein the first predetermined feed rate is based on the one or morerepair setting inputs; activate a heater of the handheld device that isin communication with the one or more processors to heat thethermoplastic material to the predetermined temperature; and activate adispenser that is in communication with the one or more processors toconvey, at the first predetermined feed rate, the thermoplastic materialin the first direction. In an exemplary embodiment, the instructionsthat cause the one or more processors to activate the heater to heat thethermoplastic material to the predetermined temperature includesinstructions that cause the one or more processors to: receive data froma temperature sensor; determine an actual temperature from the datareceived from the temperature sensor; determine a temperature differencebetween the actual temperature and the predetermined temperature; andcontrol the heater based on the temperature difference between theactual temperature and the predetermined temperature. In an exemplaryembodiment, the plurality of instructions stored on the non-transitorycomputer readable medium and executable by one or more processors,further includes instructions to: receive a begin instruction from apedal controller that is in communication with the processor; anddetermine if the actual temperature exceeds a minimum predeterminedtemperature; and wherein the instructions that cause the one or moreprocessors to activate the dispenser to convey the thermoplasticmaterial in the direction towards the extruder tip and at the firstpredetermined feed rate are executed during or after: the one or moreprocessors determine that the actual temperature exceeds the minimumpredetermined temperature; and the one or more processors receives thebegin instruction from the pedal controller. In an exemplary embodiment,the plurality of instructions stored on the non-transitory computerreadable medium and executable by one or more processors, furtherincludes instructions to: receive gas flow data from a gas flow sensorlocated in the handheld device; identify an actual gas flow rate basedon the received data from the gas flow sensor; determine if the actualgas flow rate is less than a predetermined minimum gas flow rate; anddeactivate the heater if the actual gas flow rate is less than thepredetermined minimum gas flow rate. In an exemplary embodiment, theinstructions further include: instructions that cause the one or moreprocessors to receive an unload instruction; instructions that cause theone or more processors, during or after receiving the unloadinstruction, to simultaneously: maintain the heater in a deactivatedstate; and activate the dispenser to convey, at a second predeterminedfeed rate that is different from the first predetermined feed rate, thethermoplastic material in a second direction that is opposite to thefirst direction. In an exemplary embodiment, the instructions furtherinclude: instructions that cause the one or more processors to receive areload instruction; instructions that cause the one or more processors,during or after receiving the reload instruction, to: receive gas flowdata from a gas flow sensor located in the handheld device; identify anactual gas flow rate based on the received data from the gas flowsensor; determine if the actual gas flow rate is equal to or greaterthan a predetermined minimum gas flow rate; activate the heater upondetermination that the actual gas flow rate is equal to or greater thanthe predetermined minimum gas flow rate; receive data from a temperaturesensor; determine an actual temperature from the data received from thetemperature sensor; determine a temperature difference between theactual temperature and the predetermined temperature; control the heaterbased on the temperature difference between the actual temperature andthe predetermined temperature; and activate the dispenser to convey, ata third predetermined feed rate that is different from the firstpredetermined feed rate, the thermoplastic material in the firstdirection. In an exemplary embodiment, the instructions further include:instructions that cause the one or more processors to receive a coolinstruction; instructions that cause the one or more processors, duringor after receiving the cool instruction, to: maintain the heater in adeactivated state such that the heater is not heating the thermoplasticmaterial; place a gas source in fluid communication with the heater; andmaintain the dispenser in a deactivated state such that thethermoplastic material is not being conveyed in the first direction. Inan exemplary embodiment, the instructions further include: instructionsthat cause the one or more processors to receive a heat instruction;instructions that cause the one or more processors, during or afterreceiving the heat instruction, to: maintain the dispenser in adeactivated state such that the thermoplastic material is not beingconveyed in the first direction: place a gas source in fluidcommunication with the heater; receive gas flow data from a gas flowsensor located in the handheld device; identify an actual gas flow ratebased on the received data from the gas flow sensor; determine if theactual gas flow rate is equal to or greater than a predetermined minimumgas flow rate; activate the heater upon determination that the actualgas flow rate is equal to or greater than the predetermined minimum gasflow rate; receive data from a temperature sensor; determine an actualtemperature from the data received from the temperature sensor;determine a temperature difference between the actual temperature andthe predetermined temperature; and control the heater based on thetemperature difference between the actual temperature and thepredetermined temperature.

A method of operating a repair system has been described that includesproviding a handheld device including an extruder tip having an interiorpassageway extending between an inlet and a tip outlet, conveying asolid thermoplastic material into the inlet and towards the tip outlet;heating the solid thermoplastic material as the solid thermoplasticmaterial is conveyed through the interior passageway such that a fluidicthermoplastic material exits the tip outlet of the extruder tip; andsurrounding the tip outlet of the extruder tip with a skirt-shapedcurtain of gas. In an exemplary embodiment, the method further includespositioning the extruder tip within a passageway of a tubular nozzle toform an annulus defined by the exterior surface of the extruder tip andan interior surface of the nozzle. In an exemplary embodiment,surrounding the tip outlet of the extruder tip with the skirt-shapedcurtain of gas includes forcing a gas through the annulus in a directionaway from the inlet and towards the tip outlet of the extruder tip. Inan exemplary embodiment, positioning the extruder tip within thepassageway of the tubular nozzle to form the annulus further includespositioning the extruder tip longitudinally relative to the nozzle suchthat the tip outlet of the extruder tip extends beyond an end surface ofthe nozzle by a first offset dimension. In an exemplary embodiment, theexterior surface of the extruder tip and the end surface of the nozzledefine a shoulder; and wherein the end surface of the nozzle is radiallyspaced from the exterior surface of the extruder tip by the annulus. Inan exemplary embodiment, heating the thermoplastic material as thethermoplastic material is conveyed through the passageway includespassing a heated gas through the annulus. In an exemplary embodiment,the skirt-shaped curtain of gas is when a heater located in the handhelddevice is activated; wherein the first offset dimension defined betweenthe tip outlet the extruder tip and the end surface of the nozzle isgreater than a thickness of a first part; wherein the thickness of thefirst part is a dimension defined by a first surface and an opposingsecond surface of the first part; and wherein the method furtherincludes coupling the first part to a second part that has an openingformed through the second part; wherein coupling the first part to thesecond part includes: inserting, in a first direction, the extruder tipthrough the first surface and the opposing second surface of the firstpart to form a passageway in the first part; inserting, in the firstdirection, the extruder tip through the opening of the second part whilethe extruder tip extends within the passageway of the first part; andconveying the fluidic thermoplastic material through the tip outlet ofthe extruder tip while moving the extruder tip in a second directionthat is opposite the first direction such that the fluidic thermoplasticmaterial is accommodated in the opening of the second part and thepassageway of the first part. In an exemplary embodiment, theskirt-shaped curtain of gas is unheated when the heater located in thehandheld device is in a deactivated state; wherein the method furtherincludes: maintaining the heater in the deactivated state; and coolingthe first part and the fluidic thermoplastic material accommodated inthe opening of the second part and the passageway of the first partusing the unheated skirt-shaped curtain of gas. In an exemplaryembodiment, cooling the part and the fluidic thermoplastic materialaccommodated in the opening of the second part and the passageway of thefirst part using the unheated skirt-shaped curtain of gas protects thefluidic thermoplastic material that is accommodated in the opening ofthe second part and the passageway of the first part from debris In anexemplary embodiment, the method also includes contacting the shoulderwith the first surface of the first part to stop the insertion of theextruder tip through the first surface and the opposing second surfaceof the first part in the first direction. In an exemplary embodiment,cooling the first part and the fluidic thermoplastic material that isaccommodated in the opening of the second part and the passageway of thefirst part using the unheated skirt-shaped curtain of gas rivets thefirst part to the second part to couple the first part to the secondpart. In an exemplary embodiment, the solid thermoplastic material isconveyed, by a dispenser, into the inlet of the extruder tip towards tipoutlet of the extruder tip at a predetermined feed rate; wherein, as thesolid thermoplastic material is conveyed through the passageway, thesolid thermoplastic material is heated to a predetermined temperaturesuch that the solid thermoplastic material becomes the fluidicthermoplastic material, using a heater that forms a portion of thehandheld device; wherein the method further includes: receiving, using acontroller that forms a portion of the repair system and that is incommunication with the heater and the dispenser, one or more repairsetting inputs; identifying, using the controller and based on the oneor more repair setting inputs, the predetermined feed rate and thepredetermined temperature; controlling, using the controller, the heaterto heat the thermoplastic material to the predetermined temperature; andcontrolling, using the controller, the dispenser to feed thethermoplastic material at the predetermined feed rate.

A repair system has been described that includes a handheld deviceincluding: a first extruder tip having an interior passageway extendingbetween an inlet and a tip outlet, wherein the inlet is configured toreceive a solid thermoplastic material and the tip outlet is configuredto dispense a fluidic thermoplastic material; a nozzle surrounding thefirst extruder tip to form an annulus between an interior surface of thenozzle and an exterior surface of the first extruder tip; and a heaterthat is configured to heat the interior passageway of the first extrudertip such that the solid thermoplastic material becomes the fluidicthermoplastic material. In an exemplary embodiment, the nozzle is atubular forming a passageway and has an end surface; wherein at least aportion of the first extruder tip extends within the passageway of thenozzle and another portion of the first extruder tip extends beyond theend surface of the nozzle such that the tip outlet is spaced from theend surface of the nozzle; wherein the exterior surface of the firstextruder tip and the end surface of the nozzle define a shoulder; andwherein the end surface of the nozzle is radially spaced from theexterior surface of the first extruder tip by the annulus. In anexemplary embodiment, the system further includes a gas source in fluidcommunication with the annulus such that a skirt-shaped curtain of gasextends from the annulus and in a direction towards the tip outlet ofthe first extruder tip. In an exemplary embodiment, the skirt-shapedcurtain of gas surrounds the fluidic thermoplastic material as it isdispensed from the tip outlet of the first extruder tip to protect thefluidic thermoplastic material from debris. In an exemplary embodiment,the heater is configured to heat a gas to heat the interior passagewayof the first extruder tip; wherein the repair system further includes: acontroller that is in communication with the heater and that isconfigured to identify a predetermined reference temperature; and atemperature sensor that is in communication with the controller and thatis configured to sense an actual temperature of the heated gas; andwherein the controller, the temperature sensor, and the heater form atemperature feedback control loop that uses the predetermined referencetemperature as an input for the feedback control loop and the actualtemperature as a feedback for the feedback control loop. In an exemplaryembodiment, the system further includes a dispenser that is incommunication with the controller and that is configured to convey thesolid thermoplastic material to the inlet of the first extruder tip at apredetermined feed rate; wherein the controller includes: a processor;and a computer readable medium operably coupled to the processor, thecomputer readable medium including a plurality of instructions storedtherein and executable by at least the processor, the plurality ofinstructions including: instructions for receiving one or more inputparameters; instructions for selecting the predetermined referencetemperature to which the solid thermoplastic material is heated based onthe one or more input parameters; instructions for selecting thepredetermined feed rate at which the solid thermoplastic material is tobe conveyed to the inlet of the first extruder tip based on the one ormore input parameters; instructions for activating the heater to heatthe solid thermoplastic material to the predetermined referencetemperature; and instructions for activating the dispenser to convey thesolid thermoplastic material to the inlet of the first extruder tip atthe predetermined feed rate. In an exemplary embodiment, the one or moreinput parameters includes a first input parameter indicating material(s)of which the solid thermoplastic material is/are composed. In anexemplary embodiment, the one or more input parameters includes a secondinput parameter indicating a shape of the tip outlet of the firstextruder tip. In an exemplary embodiment, the one or more inputparameters includes a third input parameter indicating a type of repairto be performed by the repair system. In an exemplary embodiment, thehandheld device includes a housing to which the first extruder tip isdetachably coupled; wherein the repair system further includes a secondextruder tip configured to be detachably coupled to the housing of thehandheld device; and wherein the second extruder tip is different fromthe first from the first extruder tip.

In several exemplary embodiments, while different steps, processes, andprocedures are described as appearing as distinct acts, one or more ofthe steps, one or more of the processes, and/or one or more of theprocedures may also be performed in different orders, simultaneouslyand/or sequentially. In several exemplary embodiments, the steps,processes and/or procedures may be merged into one or more steps,processes and/or procedures. In several exemplary embodiments, one ormore of the operational steps in each embodiment may be omitted.Moreover, in some instances, some features of the present disclosure maybe employed without a corresponding use of the other features. Moreover,one or more of the above-described embodiments and/or variations may becombined in whole or in part with any one or more of the otherabove-described embodiments and/or variations.

The description and figures are not drawn to scale, but rather areillustrated to describe various embodiments of the present disclosure insimplistic form. Although various embodiments and methods have beenshown and described, the disclosure is not limited to such embodimentsand methods and will be understood to include all modifications andvariations as would be apparent to one skilled in the art. Therefore, itshould be understood that the disclosure is not intended to be limitedto the particular forms disclosed. Accordingly, the intention is tocover all modifications, equivalents and alternatives falling within thespirit and scope of the disclosure as defined by the appended claims.

In the interest of clarity, not all features of an actual implementationor method are described in this specification. It will of course beappreciated that in the development of any such actual embodiment,numerous implementation-specific decisions must be made to achieve thedevelopers' specific goals, such as compliance with system-related andbusiness-related constraints, which will vary from one implementation toanother. Moreover, it will be appreciated that such a development effortmight be complex and time-consuming, but would nevertheless be a routineundertaking for those of ordinary skill in the art having the benefit ofthis disclosure. Further aspects and advantages of the variousembodiments and related methods of the disclosure will become apparentfrom consideration of the following description and drawings.

The disclosure may repeat reference numerals and/or letters in thevarious examples. This repetition is for the purpose of simplicity andclarity and does not in itself dictate a relationship between thevarious embodiments and/or configurations discussed. Further, spatiallyrelative terms, such as “beneath,” “below,” “lower,” “above,” “upper,”and the like, may be used herein for ease of description to describe oneelement or feature's relationship to another element(s) or feature(s) asillustrated in the figures. The spatially relative terms are intended toencompass different orientations of the apparatus in use or operation inaddition to the orientation depicted in the figures. For example, if theapparatus in the figures is turned over, elements described as being“below” or “beneath” other elements or features would then be oriented“above” the other elements or features. Thus, the exemplary term “below”may encompass both an orientation of above and below. The apparatus maybe otherwise oriented (rotated 90 degrees or at other orientations) andthe spatially relative descriptors used herein may likewise beinterpreted accordingly.

What is claimed is:
 1. A repair system, comprising: a handheld devicecomprising: a first extruder tip having an interior passageway extendingbetween an inlet and a tip outlet, wherein the inlet is configured toreceive a solid thermoplastic material and the tip outlet is configuredto dispense a fluidic thermoplastic material; a nozzle surrounding thefirst extruder tip to form an annulus between an interior surface of thenozzle and an exterior surface of the first extruder tip; and a heaterthat is configured to heat the interior passageway of the first extrudertip such that the solid thermoplastic material becomes the fluidicthermoplastic material.
 2. The repair system of claim 1, wherein thenozzle is a tubular forming a passageway and has an end surface; whereinat least a portion of the first extruder tip extends within thepassageway of the nozzle and another portion of the first extruder tipextends beyond the end surface of the nozzle such that the tip outlet isspaced from the end surface of the nozzle; wherein the exterior surfaceof the first extruder tip and the end surface of the nozzle define ashoulder; and wherein the end surface of the nozzle is radially spacedfrom the exterior surface of the first extruder tip by the annulus. 3.The repair system of claim 1, further comprising a gas source in fluidcommunication with the annulus such that a skirt-shaped curtain of gasextends from the annulus and in a direction towards the tip outlet ofthe first extruder tip.
 4. The repair system of claim 3, wherein, theskirt-shaped curtain of gas surrounds the fluidic thermoplastic materialas it is dispensed from the tip outlet of the first extruder tip toprotect the fluidic thermoplastic material from debris.
 5. The repairsystem of claim I, wherein the heater is configured to heat a gas toheat the interior passageway of the first extruder tip; wherein therepair system further comprises: a controller that is in communicationwith the heater and that is configured to identify a predeterminedreference temperature; and a temperature sensor that is in communicationwith the controller and that is configured to sense an actualtemperature of the heated gas; and wherein the controller, thetemperature sensor, and the heater form a temperature feedback controlloop that uses the predetermined reference temperature as an input forthe feedback control loop and the actual temperature as a feedback forthe feedback control loop.
 6. The repair system of claim 5, furthercomprising: a dispenser that is in communication with the controller andthat is configured to convey the solid thermoplastic material to theinlet of the first extruder tip at a predetermined feed rate; whereinthe controller comprises: a processor; and a computer readable mediumoperably coupled to the processor, the computer readable mediumcomprising a plurality of instructions stored therein and executable byat least the processor, the plurality of instructions comprising:instructions for receiving one or more input parameters; instructionsfor selecting the predetermined reference temperature to which the solidthermoplastic material is heated based on the one or more inputparameters; instructions for selecting the predetermined feed rate atwhich the solid thermoplastic material is to be conveyed to the inlet ofthe first extruder tip based on the one or more input parameters;instructions for activating the heater to heat the solid thermoplasticmaterial to the predetermined reference temperature; and instructionsfor activating the dispenser to convey the solid thermoplastic materialto the inlet of the first extruder tip at the predetermined feed rate.7. The repair system of claim 6, wherein the one or more inputparameters comprises a first input parameter indicating material(s) ofwhich the solid thermoplastic material is/are composed.
 8. The repairsystem of claim 6, wherein the one or more input parameters comprises asecond input parameter indicating a shape of the tip outlet of the firstextruder tip.
 9. The repair system of claim 6, wherein the one or moreinput parameters comprises a third input parameter indicating a type ofrepair to be performed by the repair system.
 10. The repair system ofclaim 1, wherein the handheld device comprises a housing to which thefirst extruder tip is detachably coupled; wherein the repair systemfurther comprises a second extruder tip configured to be detachablycoupled to the housing of the handheld device; and wherein the secondextruder tip is different from the first from the first extruder tip.11. A repair apparatus, comprising: a non-transitory computer readablemedium; and a plurality of instructions stored on the non-transitorycomputer readable medium and executable by one or more processors, theplurality of instructions comprising: instructions that cause the one ormore processors to receive one or more repair setting inputs; whereinthe one or more repair setting inputs comprises one or more of thefollowing: a first repair setting indicating material(s) of which athermoplastic material is/are composed; a second repair settingindicating a shape of a tip outlet of a extruder tip of a handhelddevice; and a third repair setting indicating a type of repair to beperformed using the handheld device; instructions that cause the one ormore processors, during or after receiving the one or more repairsetting inputs, to: identify a predetermined temperature to which thethermoplastic material is heated based on the one or more repair settinginputs; identify a first predetermined feed rate at which thethermoplastic material is to be conveyed in a first direction that istowards the extruder tip of the handheld device, wherein the extrudertip is configured to apply the thermoplastic material to a part, andwherein the first predetermined feed rate is based on the one or morerepair setting inputs; activate a heater of the handheld device that isin communication with the one or more processors to heat thethermoplastic material to the predetermined temperature; and activate adispenser that is in communication with the one or more processors toconvey, at the first predetermined feed rate, the thermoplastic materialin the first direction.
 12. The apparatus of claim 11, wherein theinstructions that cause the one or more processors to activate theheater to heat the thermoplastic material to the predeterminedtemperature comprises instructions that cause the one or more processorsto: receive data from a temperature sensor; determine an actualtemperature from the data received from the temperature sensor;determine a temperature difference between the actual temperature andthe predetermined temperature; and control the heater based on thetemperature difference between the actual temperature and thepredetermined temperature.
 13. The apparatus of claim 12, wherein theplurality of instructions stored on the non-transitory computer readablemedium and executable by one or more processors, further comprisesinstructions to: receive a begin instruction from a pedal controllerthat is in communication with the processor; and determine if the actualtemperature exceeds a minimum predetermined temperature; and wherein theinstructions that cause the one or more processors to activate thedispenser to convey the thermoplastic material in the direction towardsthe extruder tip and at the first predetermined feed rate are executedduring or after: the one or more processors determine that the actualtemperature exceeds the minimum predetermined temperature; and the oneor more processors receives the begin instruction from the pedalcontroller.
 14. The apparatus of claim 12, wherein the plurality ofinstructions stored on the non-transitory computer readable medium andexecutable by one or more processors, further comprises instructions to:receive gas flow data from a gas flow sensor located in the handhelddevice; identify an actual gas flow rate based on the received data fromthe gas flow sensor; determine if the actual gas flow rate is less thana predetermined minimum gas flow rate; and deactivate the heater if theactual gas flow rate is less than the predetermined minimum gas flowrate.
 15. The apparatus of claim 11, wherein the instructions furthercomprise: instructions that cause the one or more processors to receivean unload instruction; instructions that cause the one or moreprocessors, during or after receiving the unload instruction, to:maintain the heater in a deactivated state such that the heater is notheating the thermoplastic material; and activate the dispenser toconvey, at a second predetermined feed rate that is different from thefirst predetermined feed rate, the thermoplastic material in a seconddirection that is opposite to the first direction.
 16. The apparatus ofclaim 11, wherein the instructions further comprise: instructions thatcause the one or more processors to receive a reload instruction;instructions that cause the one or more processors, during or afterreceiving the reload instruction, to: receive gas flow data from a gasflow sensor located in the handheld device; identify an actual gas flowrate based on the received data from the gas flow sensor; determine ifthe actual gas flow rate is equal to or greater than a predeterminedminimum gas flow rate; activate the heater upon determination that theactual gas flow rate is equal to or greater than the predeterminedminimum gas flow rate; receive data from a temperature sensor; determinean actual temperature from the data received from the temperaturesensor; determine a temperature difference between the actualtemperature and the predetermined temperature; control the heater basedon the temperature difference between the actual temperature and thepredetermined temperature; and activate the dispenser to convey, at athird predetermined feed rate that is different from the firstpredetermined feed rate, the thermoplastic material in the firstdirection.
 17. The apparatus of claim 11, wherein the instructionsfurther comprise: instructions that cause the one or more processors toreceive a cool instruction; instructions that cause the one or moreprocessors, during or after receiving the cool instruction, to: maintainthe heater in a deactivated state such that the heater is not heatingthe thermoplastic material; place a gas source in fluid communicationwith the heater; and maintain the dispenser in a deactivated state suchthat the thermoplastic material is not being conveyed in the firstdirection.
 18. The apparatus of claim 11, wherein the instructionsfurther comprise: instructions that cause the one or more processors toreceive a heat instruction; instructions that cause the one or moreprocessors, during or after receiving the heat instruction, to: maintainthe dispenser in a deactivated state such that the thermoplasticmaterial is not being conveyed in the first direction: place a gassource in fluid communication with the heater; receive gas flow datafrom a gas flow sensor located in the handheld device; identify anactual gas flow rate based on the received data from the gas flowsensor; determine if the actual gas flow rate is equal to or greaterthan a predetermined minimum gas flow rate; activate the heater upondetermination that the actual gas flow rate is equal to or greater thanthe predetermined minimum gas flow rate; receive data from a temperaturesensor; determine an actual temperature from the data received from thetemperature sensor; determine a temperature difference between theactual temperature and the predetermined temperature; and control theheater based on the temperature difference between the actualtemperature and the predetermined temperature.
 19. A method of operatinga repair system, the method comprising: providing a handheld devicecomprising an extruder tip having an interior passageway extendingbetween an inlet and a tip outlet, conveying a solid thermoplasticmaterial into the inlet and towards the tip outlet; heating the solidthermoplastic material as the solid thermoplastic material is conveyedthrough the interior passageway such that a fluidic thermoplasticmaterial exits the tip outlet of the extruder tip; and surrounding thetip outlet of the extruder tip with a skirt-shaped curtain of gas. 20.The method of claim 19, further comprising positioning the extruder tipwithin a passageway of a tubular nozzle to form an annulus defined bythe exterior surface of the extruder tip and an interior surface of thenozzle.
 21. The method of claim 20, wherein surrounding the tip outletof the extruder tip with the skirt-shaped curtain of gas comprisesforcing a gas through the annulus in a direction away from the inlet andtowards the tip outlet of the extruder tip.
 22. The method of claim 20,wherein positioning the extruder tip within the passageway of thetubular nozzle to form the annulus further comprises positioning theextruder tip longitudinally relative to the nozzle such that the tipoutlet of the extruder tip extends beyond an end surface of the nozzleby a first dimension.
 23. The method of claim 22, wherein the exteriorsurface of the extruder tip and the end surface of the nozzle define ashoulder; and wherein the end surface of the nozzle is radially spacedfrom the exterior surface of the extruder tip by the annulus.
 24. Themethod of claim 23, wherein heating the thermoplastic material as thethermoplastic material is conveyed through the passageway comprisespassing a heated gas through the annulus.
 25. The method of claim 24,wherein the skirt-shaped curtain of gas is heated when a heater locatedin the handheld device is activated; wherein the first dimension definedbetween the tip outlet and the end surface of the nozzle is greater thana thickness of a first part; wherein the thickness of the first part isa dimension defined by a first surface and an opposing second surface ofthe first part; and wherein the method further comprises coupling thefirst part to a second part that has an opening formed therethrough;wherein coupling the first part to the second part comprises: inserting,in a first direction, the extruder tip through the first surface and theopposing second surface of the first part to form a passageway in thefirst part; inserting, in the first direction, the extruder tip throughthe opening of the second part while the extruder tip extends within thepassageway of the first part; and conveying the fluidic thermoplasticmaterial through the tip outlet of the extruder tip while moving theextruder tip in a second direction that is opposite the first directionsuch that the fluidic thermoplastic material is accommodated in theopening of the second part and the passageway of the first part.
 26. Themethod of claim 25, wherein the skirt-shaped curtain of gas is unheatedwhen the heater located in the handheld device is in a deactivatedstate; wherein the method further comprises: maintaining the heater inthe deactivated state; and cooling the first part and the fluidicthermoplastic material accommodated in the opening of the second partand the passageway of the first part using the unheated skirt-shapedcurtain of gas.
 27. The method of claim 26, wherein cooling the part andthe fluidic thermoplastic material accommodated in the opening of thesecond part and the passageway of the first part using the unheatedskirt-shaped curtain of gas protects the fluidic thermoplastic materialthat is accommodated in the opening of the second part and thepassageway of the first part from debris.
 28. The method of claim 25,further comprising contacting the shoulder with the first surface of thefirst part to stop the insertion of the extruder tip through the firstsurface and the opposing second surface of the first part in the firstdirection.
 29. The method of claim 26, wherein cooling the first partand the fluidic thermoplastic material that is accommodated in theopening of the second part and the passageway of the first part usingthe unheated skirt-shaped curtain of gas rivets the first part to thesecond part to couple the first part to the second part.
 30. The methodof claim 19, wherein the solid thermoplastic material is conveyed, by adispenser, into the inlet of the extruder tip towards tip outlet of theextruder tip at a predetermined feed rate; wherein, as the solidthermoplastic material is conveyed through the passageway, the solidthermoplastic material is heated to a predetermined temperature suchthat the solid thermoplastic material becomes the fluidic thermoplasticmaterial, using a heater that forms a portion of the handheld device;wherein the method further comprises: receiving, using a controller thatforms a portion of the repair system and that is in communication withthe heater and the dispenser, one or more repair setting inputs;identifying, using the controller and based on the one or more repairsetting inputs, the predetermined feed rate and the predeterminedtemperature; controlling, using the controller, the heater to heat thethermoplastic material to the predetermined temperature; andcontrolling, using the controller, the dispenser to feed thethermoplastic material at the predetermined feed rate.